In short, something like, "I'm sorry P*, I am tired cos of the pregnancy and finding stuff very draining atm.
I get it's difficult to have a teenager live with you, but I really don't like to hear you keep saying she should be "over her," mother's death by now as she's annoyed you.
It really makes me feel uncomfortable, as I think how devastated I would be in her position, even as an adult, if my mum had died 2 years ago. I don't think may people get over that, yet alone are ready to welcome a stepmum and new baby, in a two year period.
I also really don't like how you laugh about deliberately referring to her Dad's new wife as her "new stepmum" to upset her.
I find all the talk of people being punished in the grave/ afterlife very upsetting, it actually makes me feel uncomfortable. Especially when walking past a graveyard and it's likely there could be bereaved friends/ family visiting.
Multiple missed calls in a day, when you know I'm being sick due to the pregnancy and I've already talked to you for 45 mins is too much.
Sometimes, when you stay, although you don't mean to, you cause arguments between me and DP.
He doesn't like constantly being nagged/ reminded to like your pictures on Instagram, he finds staying till 9.30pm on the Sunday too late as we both have work early the next day and also doesn't like the talk of punished in the grave.
He's finding it hard to relax when you come over as you play loud self help videos in the living room when he's trying to watch the telly.
He also doesn't want to upset you when you tell him about the problems you have with colleagues, but finds that often his viewpoint is different to yours.
He didn't think going through your colleague's Facebook to try and prove she wasn't that close to her aunt, and therefore didn't deserve compassionate leave, and then confronting her, was a nice thing to do; and felt uncomfortable when you wouldn't leave it and kept asking for advice on texts you could send this colleague over the weekend.
I do want to welcome you, but I hope you can understand why I'm finding the above so difficult."
I'm finding myself very tired at the moment, and can longer constantly draft texts to people you have fallen out with at work.