This will be a long post so sorry in advance. I really need to get this all off my chest 
I am 20 and DP is 22. MIL has DP (different father to the other kids), DS16, DS12, DD11, DD5. When we first met two years ago we got on great. Shopping trips, coffee dates, I would babysit for her etc. She always joked about how we should have a baby and last year I fell pregnant with DD. Her reaction confused me a bit - she seemed unimpressed and said she'd guessed anyway.
Up until the 20 week scan when we found out it was a girl she was lovely. Buying bump nice clothes, being slightly overbearing insisting on names but other than nothing near as bad as was to come 
MIL will happily admit she'd love another child, heck she'd want 10 more if she could. She split from DPs step father because of this a month before I got pregnant.
During the end of my pregnancy she barely spoke to me just DP. We moved in together a few streets down from her (worst decision of my life)...
- Her children came every single day. I was exhausted. She would let them play out whilst she was at work till 10pm (??!) and tell them to come to our house if they needed anything. DP asked her to arrange a babysitter as we was getting no time together.
- Like I mentioned DP has a different dad to his siblings. He gets treated differently. She has pictures of the kids on her windowsill, none of DP and in a family collage there is one picture he is in the background of. She only talks to him when she wants him to babysit, which was EVERY NIGHT until she finally arranged a permanent babysitter last week. DPS ex SF even said Mil was only being friendly to DP because of the baby which I think is sadly true.
- We decided on a name as soon as we found out DD was a girl. Referred to her as this, bought personalised items, we couldn't imagine her as anything else. MIL said she hated the name and preferred another and referring to DD as it.
- MIL asked if we could take in her elderly dog as she had no time for him due to work. DP said yes as Rocky is his childhood pet. Ive loved having him here too, but he molts an awful lot and its hard to keep on top of with a baby. We asked MIL if now she has a babysitter could Rocky come home now Dd is born. Her answer was no shes just got new carpets... Yet shes just bought DS16 a puppy. Who has apparently ruined the carpet.
- Fast forward to DD being born. MIL constistently pestering to babysit her. I agreed as in the early days any help was a blessing. Those 2/3 hours to just nap or catch up on cleaning kept me sane, so I know some people on here will disagree with letting people take your newborn out but for me it was a lifesaver. My mum helps out too maybe once every two weeks taking Dd out for an hour or two.
MIL borrows my car when she takes Dd out as she hasnt got one (fully insured to do so). But she takes the absolute piss bringing her back on time which gives me the worst anxiety. She ignores me texting to see if DD is ok but will answer if DP rings because she knows he will firmly tell her to come back. I am a shy person so its only recently Im building the confidence to say no to MIL.
Now DD is 4 months old I feel like I dont need as much support as before. She sleeps through the night, is a very content baby and we've just got ourselves onto our feet. My mum understands this so just has DD out every now and again. MIL had a stomach virus, so did her DDs, 2 weeks ago. She asked DP to ask me (
) if she could babysit, I said no 4 times that week so I think she got the hint. She hasn't asked about DD to either of us for nearly 2 weeks which has surprised us both... up until DD went to my mums for 2 hours on Saturday. MIL asked to have her today 1-4 30 along with my car to take DD and her DC out. Reluctantly I've agreed but I'm proud of myself for putting my foot down and saying she can have DD from 1 - 3 being adamant I need her home at 3 and asked where she was going with her as normally shes very vague and strange about it, as if i shouldnt ask?
I hope this all makes sense. I was just so fed up of being put down by this woman. (For instance, she told Dp to tell me DDs nappy was too tight. But bought her a 100 pack of pampers size 1 when they are too small and irritate dds skin which she knows. And sent her home in her DD5s doll outfit which was hurting my DDs wrists and didnt even button up. I sent her a picture of it and said its like me trying to fit in size 6 jeans.)
I'm dreading today, if she even shows up to take her, but like I said Im proud I managed to put my foot down with her. Heres to hoping she brings DD back on time. Please someone tell me this woman seems just as crazy to you 