With the fact that they're going from one promotional cycle (Korea) to the next (Japan) do they really expect her to heal properly? If she's a perfectionist (like many entertainer seem to be) she's not going to rest for very long because she's going to need to practice for this or that and it's just going to exacerbate her already weak leg/knee. Ice and a handful of painkillers will only get your so far before you'll need to seek professional help (i.e., surgery as a worse case scenario). The good thing about the injury, though not about her profession, is that she's young and can, if done properly, bounce back with real down time.