MiL related. She's genuinely a really thoughtful, kind, family orientated person. She puts her children first, loves my children (her DCs), and is generous and friendly to me. She's also a bit passive aggressive, and has a history of turning up when asked not to (births etc), and booking into hotels near us saying that 'we don't need to see her', which we then feel obliged to, and end up seeing her for a week at a time at times that we were clear aren't suitable. She cries and gets very upset if we don't do what she wants, and I feel really manipulated (she's a wee bit better in that specific direction these last couple of years, but with another baby on the way I worry it'll ramp up again). DH is a bit stuck in the middle, but has got better at putting in boundaries with her.
There's a lot of boring water under the bridge of about 20 things she's done that make me fume (I'm sure I make her pissy too at times), but the crux of it is that I feel I'm being unreasonably hostile (by being super polite but totally emotionally closed to her in a really mean minded way), and I can't seem to stop. I'm a grown adult and I ought to be able to control my behaviour better, and I want to deal with this relationship better, but when she does one more (usually very smallish) irritating passive aggressive thing, it makes me see red to a totally unreasonable level. I tried talking to her about our relationship twice over the years, but she just nods and smiles, and says 'anything you like dear', then goes and does whatever she wanted to do anyway. It takes almost nothing to trigger me to feeling anger at her now. I'm due to give birth again this week, and I'm losing sleep thinking of all the annoying things she'll probably do that will make me weep with impotence. I'm blowing it out of all proportion, but it feel really important to me that I've felt so out of control with her over the years.
I think, writing this, I see the answer is probably to go get a bit of therapy to talk this through, but I wondered if anyone had any advice to help me fume less and cope better when I see the PiL later this month. I don't say anything nasty, I don't lose my temper out loud or do anything really, but I'm totally un-giving to her in particular, and just go through a charade of welcoming her whilst thinking nasty thoughts about how angry I am at her over the years. It's clear that i don't want them there, which is very very small of me. It makes me feel like a super bitch, when she is (despite being bloody annoying) a genuinely quite nice person.
Any advice very gratefully received.