My mother wants to be here but….

Hi, I’m 37w3d currently and feeling a bit stressed out. Super hormonal having had a bit of a ‘mare with GDM nurses being threatening/rude, needing to chase the GP for everything. This is my 1st baby and I’m older. I had two rounds of IVF to achieve my pregnancy, and my mother who is loving and supportive for the most part also does not acknowledge that her behaviour is stressful because she doesn’t listen. Just before I started my second round of IVF I called her and told her that I needed to minimise stress whilst having the stimulation injections; doctors say that stress is a big factor in producing good eggs or not. I had agreed with my partner that we would try IVF twice before having a conversation about whether it would be wise to try anymore due to my age and also the effect of the medication on my mental health and general wellbeing. Well, during that call she stressed me out so much that I was in tears and my partner took the phone and tried to explain to her that this was a very delicate time and I needed to be calm. She got upset and hung up. Fast forward, I’m now pregnant, and high risk, so have scheduled a c section for 11th Dec. She wants to come to stay a few days beforehand (initially she wanted to arrive the day before until I told her that would be stressful because we needed to be at the hospital at the crack of dawn). I do want her to be here, but as I don’t really know how long I’ll be in the hospital or what will happen, could she come when I have been discharged and sent home? I told her (during the recent cold weather in the UK) that we weren’t always heating the whole house, but if she comes to stay that I will have to prep a guest room for her, get food in, teach her how to use my kitchen, and heat the house because I can’t let a 76 year old lady stay in a very cold house (my house is very old). There isn’t room for her to sleep where my partner, and I, and the baby will initially sleep, so I feel this is just adding to my plate. She also got upset when I couldn’t tell her if I would be travelling 2+ hours to have Christmas at her house with the baby, exactly 14 days after I’ve given birth/had a c section. I told her that newborns aren’t really allowed in a car seat for longer than 45 minutes at a time now, which would make a journey to her very difficult. I have an older sister who has invited her to their house, but she’s being very difficult with me. Am I just being overly sensitive? Hormonal? My sister has been telling her for months that I won’t know what I want to do until baby is here, but that it would be highly unlikely I would want to host her for Christmas or go anywhere except my own home. Sorry for the rant, just feeling a bit desperate and not sure how else to communicate to her that she’s not really thinking straight, or is it me?