Those bad experience with people would make you a stronger person, and the sad feeling will pass, I've been there, done that, and move on, you are now in the middle of it, you will get through it okay!!! I'm glad your sister is by your side, at least you get support from her, that is a good thing. Do you have bandage/cast on your big toe? Draw a smiley face on it, make it look less nasty and fun, hehe!!! Get better soon and hang in there!!!