Work alot on single-leg balaqncing drills to help recover more quickly. It seems that this problem increases significantly with the onset of adolescence. After the start of puberty, a girl's ACL risk in sport is about one in 50. It depends on how unstable your knee is. However, if you are going to have the surgery, earlier is better than later.
High heels tend to shorten the muscles and tendons at the back of the leg.
These muscles are important for knee stability. I have noticed that most people who have recently had acl surgery use them, but a few people said their doctor never had patients wear braces. My opinionh is that braces are a bad idea. Just recently, I injured my left knee, also near my lateral meniscus. The left may be at higher risk, it depends on how well it healed.