You don’t need to explain yourself, you need support not judgement and not people making assumptions about your life.
My mother had PND after having me and I was apparently very similar to how your daughter sounds.
I didn’t sleep, talked constantly and was an absolute bundle of energy, I imagine it was hard to love me when I was so exhausting!
it’s no surprise that I was diagnosed with ADHD - but not till I was an adult.
My mum took meds for PND kept going and I didn’t learn about how much she was struggling till I was an adult. I’ve no resentment and just complete respect that she managed to cope and kept parenting when she felt so low.
My mum told me things improved as I got older and went to school full time, she also made sure I had lots of time with friends so I could witter at them and not her. I wasn’t the best at keeping friends because I was apparently so exhausting and hyper but eventually I had a long lasting friendship with a neighbours child which helped because when I was over there my mum had a break and when she was at our house I was distracted. Are there any friends like that who can keep your daughter company?
Are you friends with other mothers? You say people struggle being around your daughter as she’s so full of energy but are there any activities you can get her to join where you can also build friendships?
I don’t think you should feel bad at all for having a night out every week. If your daughter is looked after and it gives you a break and makes you feel like more than just a mother it’s fine. Most of the people who criticise have never been a single parent and have no idea how exhausting it is and relentless, if your daughter is neurodivergent on top of that then I think you’ve done amazingly well to get so far.
You’ve come on here for support and to vent and I think it’s really shitty that people have given such judgemental responses when you’ve been brave enough to disclose how you feel and admit you are struggling. It’s obvious you are trying and don’t want to feel like you do but some things are out of our control.
Please ignore any negative responses and take what you can from the positive. People don’t understand that giving you judgement has the capacity to make you stop disclosing your feelings and bottle them up, that’s more dangerous then venting on an anonymous site.
If your mother is happy looking after your daughter then I imagine you have a good relationship? It sounds like you haven’t been honest about how you are feeling though if you are lying about appointment times for a break rather then explaining you need more help.
If you have a good relationship then open up if you can, I think if she knew exactly how low you felt then she might offer more help on more honest terms, she has also been through this with you and might have some really helpful advice!
I really hope things improve for you and you feel better soon. Keep pushing for support anywhere you can find it and I’m sure you’ll look back and be proud you survived like my mum did.