i did have access to my notes a few years ago and i strongly believe you need to be mentally well enough to contemplate that they maybe things written about you that you dont agree with such as a diagnosis and consider what you will do with this information when you get it cause you cant change it you cant change peoples opinions
i didnt remember alot of what i had said or done and there were and awful lot of notes for me my cpn at the time said i could only read them in the offices where they could help me if they needed to but as i recovered more i was able to have copies so i could read them privately at home
i remember being really upset of the things i said and did and i didnt realise how ill i was really
i think your mum has an opinion but you need to decide for you and reading what you have written i am worried that it may set you back right now and that is hard to consider
i hope this makes sense it is a bit of a ramble response

p.s their handwriting is awful on mine had to ask what was written on some bits lol