If I were you, I would talk to a doctor to figure out if you've really stopped growing and whether there are any alternatives you could consider. At your age, you may still be able to stimulate growth in less invasive ways.
Let's say you have no alternatives, no one can or should tell you whether you should go for this surgery. Do not let someone else decide for you whether you should get this surgery. They won't have to live with the decisions they make for you, especially not people on the internet, you will. It's something you should figure out for yourself, at least, that's what I'd say to an adult. But the fact that you're still in your teenage years compounds the problem because teenagers have so many self image issues that I'm not sure if I would trust you to make the right decision for yourself long term. It's like asking us hey I'm 15, C cup, female, should I get a boob job. Our knee jerk reaction is going to be a resounding NO. At least get out there in the real world, pursue your passions, make better friends before considering making any life altering decisions. At 15, there's an infinite number of ways to make your life better. If you're struggling and you're convinced it's because of your height, then come back to the issue.
Give us a background story so we can offer better, more objective advice. Why do you want to be taller? What are your long term goal? What else have you tried? What's your hesitation with LL? Are you worried about the risks, the costs, the scars? Are you worried that height may actually not be your problem and growing a few inches isn't going to solve anything? How much are you willing to risk for the procedure? How much does it matter to you?
