Do you think the note was sincere or fake?

It may be her way of finaly getting you out of her mind....she may be trying to cope with losing you by not talking to you or just doesn't want you in her mind anymore. You should get a few minutes alone with her and tell her that you still have feelings for her.....but does she still have feelings for you....tell her what you truely feel.....and dont hold back....it is better to know the truth then to wunder about it