PLEASE HELP! SHE WON'T COME!!

Question:
 ??? About two months ago my mother gave me a lhasa apso. Her name is Chloe and she is a very smart dog. I can teach her tricks and she quickly catches on, which is why I don't understand why she won't come when I tell her to. Inside she will usually come when I tell her to, but outside she is a horror. I have tried a loose leash and slightly tugging it when I say come. IT WORKS, BUT ONLY WHEN SHE IS ON THE LEASH!! She knows when she isn't on the leash, therefore she doesn't listen when she isn't on the leash. The other day I let her outside and turned my back for a second and couldn't find her. It turned out she ran into the neighbors yard, but when I called her she didn't come. My biggest fear is that she will get lost. I am 15, so I don't have hours to spend with her outside practicing things. I spend about 45 minutes a day outside playing with her. How can I use this time wisely to teach my dog to come when I call her. -Thank you in advance- :)
Answer:
 I teach "real world recalls" in class and they are very effective. But you must remember, there will always be things that are too much temptation for even the best trained dog. A solid recall is a safety net in case the dog gets loose and we must train for as many situations as we can think our dog running into in a safe, controlled environment. This is a shortened version of what is in my manual and I have found it very effective. "COMING WHEN CALLED: Having a dog that will come reliably when called is a great asset. However, this does not mean you can let him run loose. Even the best trained dogs may slip up: a cat may cross its path; squirrels are great to chase; kids on skate boards; escaped dog panics and will not return. Just because your dog returns reliably most of the time is not enough. Very few dogs can be trusted off lead. It may take years of consistent training to get a dog this way. Before we begin teaching COME, I want to emphasize NEVER EVER call Puppy to you then punish him REGARDLESS OF WHAT HE DID! In a Puppy's mind, he is being punished for coming to you and not for eating your $1,000 Gucci bag. Forgetting this fact and punishing after calling him can make Puppy scared to come when called - a very bad thing... I cannot emphasize this enough... NEVER EVER CALL PUPPY AND THEN PUNISH! You want to be like an Ice Cream Sundae to a child as opposed to a bowl of steamy spinach. What would the child rather have? Would a dog rather have fun or not? Ice Cream or Spinach? Now that we have this straight... COME Start with your dog on a six-foot lead. Allow him to get interested in something. Walk to the end of the lead, make sure the lead is loose and HAPPILY call "[Name] COME!" If he ignores you, tap the lead, repeat the command and start praising as soon as he turns to you. You may clap your hands, take a couple running steps back, crouch down, anything to make you more interesting than whatever was on the ground. Do this exercise on various length leads with mild distractions. Remember the more you have to work against to seem like an Ice Cream, the harder it will be to get your dog to come. At first, you need to be the most enticing thing there. As soon as the dog gets to you, BIG praise and reward, make this the BEST thing in the world! Teach your dog that you or family members can also call him away from people. Put the dog on the long lead - you can use a sturdy length of close line. Just make sure your dog is attached to something. Have a helper hold the dog. Go to the end of your lead and crouch down. While holding the lead, spread you arms wide and in your most happy voice say, "[NAME] COME!" Clap your hands make a FUN ruckus make him want to come to you above all else - even Prime Rib could not keep him from you! When he gets to you comes, stop him in front of you and PRAISE. At first, just have the helper hold the lead and NOTHING else. They should be totally ignoring the dog. Gradually move to a hand being on the dog, soft talking, etc. Do "Round Robins" where several people are in a circle. Toss the lead from person to person; each person with the lead calls the dog. Then they hold the dogs while the next person call the dog. Always praise and keep it fun! Play Hide and Seek. Have a helper hold the dog or let the dog get interested in something and then you silently slip around a corner – KEEP IT VERY EASY AT FIRST. Call the dog and get the dog really wanting to come find you. Gradually get harder and play this game both inside and outside. This will help teach that even if you cannot be seen, the dog still has to come and find you. If you start to get frustrated and your voice shows it, STOP, as with any exercise. You do not want to make this unpleasant. Neither do you ever call a dog to you and punish him - no matter what he did. Dog's think differently and will not associate the punishment with the action he did before you called. He will associate the punishment with the action of coming to you. Puppy's life could depend on it."
Answer:
 Pups need repeated training in small doses, they get bored v.easily, it needs to be fun but serious and they need to be rewarded every time you have success - once they know you've got the treatz, you have their attention. Always use hand gestures with voice commands, maybe try associating giving treat with a certain clicker type noise - try clapping hands, repeat it over and over, she'll get to know the routine. My dog was a stubborn little thing sometimes :) Ganny - he wouldn't always come when he was called, I sometimes had to "bribe him", he'd come running if I shouted the name of one of his doggy friends....... Jess, Rosie, Jollyboy, he'd come running if I clapped hands and when I shouted bye bye ! He was a crazy dog but v.intelligent, I was always worried about losing him, or not coming back to me if he managed to get off lead in unsafe environment, I always took treatz when we went for walks and tried to keep his attention as much as poss. He had good days and not so good days, dogs make mistakes too ! :)