Maika, my husband has been acting similar to your wife the past few days. He got frustrated and annoyed easily and just seems like he's angry with me despite the fact that I've changed in the past year. I think it's one of several things such as 1) they're not happy and seeing us reminds them of what they don't like about themselves, 2) they're angry with us for something we didn't do right in the past and they've been waiting for us to do or say something that we haven't yet done, 3) they still haven't grown or changed and this is one of their mood swings, or 4) they're generally unhappy with their situation and can't hide it in our presence. Who knows. Maybe it's also the guilt projected as anger or seeing us happier makes them feel worse. I wish there'd be some kind of translator we can use but I guess even better is to be like you and just not care or let it affect you.