Last time I wrote I was just finding out we were pregnant, we were in the middle of the "private school thingy" for the SK and I was pretty much done with my in-law family.
After that months passed, we found out we were having a boy and DH decided not to tell his family about it since they didn't take the pregnancy news too well. One day my MIL called because she wanted to know how much CS money he was sending so she could do her math and chip in for the tuitition, then she started to talk shit about me, little she knew DH had her on speaker and I was listening everything, I took the phone and said "Hi" (Gosshh I wish I could have seen her face!) and replied some of her complains. I guess something good came from that talk (that lasted until 4am) because she admitted she wanted to be in our son's life and wanted to be at the delivery room.
And she was, or sort of... she came to our place and stayed a week with us after the delivery, it had to be a c-section and DS was admitted to NICU due some respiratory problems.
Everything looked good after that and she even called every other week to see how her grandson was doing, then december came. We stayed with her and SK during Christmas, we had so much fun! but by the end of our visitation SK insisted she wanted her BM to meet her lil' bro, of course I didn't want it to happen. SK demanded to speak with her BM and told her to pick her up the night before our departure (oh yes, did I mention that my SIL was the one who called the BM?... things haven't change with her at all). My MIL asked me if I was ok with it and I said "no, at least not at this time" and I thought that was the end of the conversation, I went upstairs to feed the baby and when I went downstaris, BM was having a family dinner with my MIL and SIL and SK! MIL invited her to stay over (with me, DH and DS on the next room). DH packed everything up and we were about to leave when she confronted us, she didn't understand why we were so upset about it, if "it's only SKs mom! what's wrong with her staying with us?"
MIL, being divorced herself finally understood when she was put on my shoes (does she really would stay at our home if DH's SM was staying with us too?, I don't think so!)... and BM was asked to leave.
So now, here's the new one: We're flying on friday over DHs hometown as we will attend his best friend's wedding, and MIL asked us if she could babysit DS (he has only seen her once, back in december) so, we said yes but I'm still unsure that'll work out.
We're just a few days short before that trip, and I have found out that my MIL won't babysit my DS but my SIL and also she will be babysitting SK too.
I have always felt SIL doesn't really even like my DS, especially since he took away DHs attention towards SK (good-bye golden womb! ) so I'm extremely worried.

DH thinks I'm overreacting and believes everything will be just fine. Me? not so sure. I'm struggling between leaving him with his aunt and his half-sister or bringing him to the wedding (which means a sleep deprived baby at the next day, and us sitting at the table all night... I was really looking forward to this solo time with DH! )

Any comment would be highly appreciated!