Ok one, unless you actually stuck your hand in the bucket and rub it a little but then you most likely didn't touch anywhere near she threw up! Also by now it would have dried up (gross i know) and probably isn't as contagious, but i agree it sounds like it wasn't a sv* or else the family would have known! Also little kids sometimes tend to exaggerate, i knew a girl about 5 who said she had thrown up when really she had just spat into the toilet so you never know! I seriously wouldn't waste one minute worrying and look forward to your graduation, good luck!