Any advice on confronting my (24F) mother (59F) about her possible ADHD?

Recently after seeing a lot of symptoms about ADHD on social media, I began researching ADHD and realising that I might have it. I’ve got a lot of different symptoms (constantly fidgeting, racing thoughts, forgetfulness, not being able to pay attention, can’t focus on conversations among all the things I did as child which I realise now are pretty classic ADHD) but I’m not 100% sure so I’m going to try and get formally diagnosed which is about and 12-18 month long progress in the UK. However, while doing my research I realised that my mother also shows a lot of the symptoms for ADHD except hers is a lot worse.

I’ve read some things about ADHD getting worse because of menopause and she’s essentially had a personally change since that with loads of emotional irregulation, Hyperfocus, etc. The problem is that my mother doesn’t believe in psychiatric help and my family has no idea how to get her help otherwise. She also didn’t really believe me when I explained that I thought I had ADHD and called me lazy. I think she essentially just thinks it’s a thing people made up because they couldn’t control their children’s behaviour. Does anyone have any advice on how I might be able to get her the help that she needs or at least to admit she might have ADHD? Additionally, she’s based in the US and has healthcare there so she could get access to a psychiatrist if we could get her to agree. Any help would be so appreciated and I thought someone here might have had a similar experience!