HELP AND POSITIVE ADVICE PLEASE!!

i recently uploaded a forum under another topic explaining that some people close to me dont fully grasp or undertstand my relationship with my partner who has ADHD... i am not married and am rather young however i love my partner very much.

in particular my mother has just begun to harrass/speak me about my boyfriend. she thinks he is very nice etc but says that I will never live a happy life with him. she makes presumptions such as he has will only ever have the emotional maturity of a 14 year old and offends me by saying that i am dellusional if i stay with him, its sad and so on. I have always been a very listening person and i tried very hard to take on her opinions that I cannot change but to expressed she isnt correct about everything ... she cant make assumptions and simply presume i am delusional etc...

i do realise she only wants what is best for me (keeping in mind she is still with her husband that abused her for a very long time) so i try to respect her and her opinions as much as possible but i need to do what I know. and know one knows your relationship like you do. However, it is making it hard for me since It makes me sad etc

she is only judging what she sees on the "outside" and making presumptions that she wont back down on for the rest of it. I dont really know what I am asking but i really want help and advice please....