reading too much into things and anti-depressants

First, two things about the antidepressants:  I forgot to take them for two days and my precarious decent mood shattered.  I feel the drug taking effect again, but I feel it's just an illusion.  Secondly, I couldn't cry for a year.  I'd get teary-eyed, but never cried.  Not even at sad TV shows or movies.  I'm still not really letting go, but a few tears have fallen.
 
Next topic.  Last week I emailed my ED to inform her that some important looking mail was sent to our address and she needed to pick it up or make arrangements to get it.  The next day her sister (who lives with us) asked where the mail was and said that she was going to meet the ED and give her the mail. My other daughter may have asked where it was and I may not have specifically answered but I did put it on the countertop with EDs name in big letters - VERY CONSPICUOUS - while we were talking about it.  I really thought she knew where it was.  So she apparently told ED I wouldn't tell her where it was.  I don't blame her - she knows how much it hurts me to talk about ED and she tries to not hurt me and not talk about it. So if she didn't understand that I was holding the envelope and writing ED's name on it, she wouldn't have asked twice. 
anyway.  Ed left a snarky voicemail asking that I tell other daughter where the package was.  But I didn't hear the message before she came over to pick up the package.  Of course, she must have phoned ahead to make sure my husband and I would not be home. 
She came over and took a picture with the cat and made it her new FB cover.  I think it was just to annoy me.  That's where the "I may be reading too much into this" comes from.  Still, it feels like she did it to annoy me.  Her comment mentioned she was with "her" cat... The cat she has almost never had anything to do with.