Thanks all you ladies and gentlemen! I appreciate all your advice very very much :)!!! This is what I have decided to do: Things like this happen (“when happy yellow pants go sad”…) - and it really wasn’t her fault…it just ticked me off a wee little bit, you know? Anyway, I haven’t done so just yet…but …well…AGGHHH!!! I can’t do it. I just can’t confront her about it 
Dagnabit! I mean, yes, I’d LOVE new yellow pants - they were quite full of awesomeness, actually…but…er…ARGH! See, the thing is…she’s living with me…my parents recently adopted her (which is kind of awkward for me - we used to know each other…we had some ISSUES (With a capital “I”) - and now she’s causing "period"ical problems. (sigh) That’s it, I’m screwed. I’ll survive - my yellow pants weren’t THAT important…but thanks for all of your replies!!! 