I am 22, living at home (with my mum and 21 year old sibling) as I am doing a master's and working part time. My relationship with my mum is generally good, we get on well and I know she loves me. However growing up I never really had much contact with wider family such as aunts or uncles or cousins, I did see my mum's parents but we weren't super close. My mum is very introverted and although I remember her sporadically having a friend or two over the years, she always lost contact with them and mostly kept to herself.
This has meant that I've grown up not having much of a support system of adults beyond my mum. She has experienced some difficult things during her childhood and adult life, and even though I know she has always, and will always, wanted to do her absolute best for me, she's maybe not the most emotionally healthy person. In the last three or four years I've been trying to become more confident in myself and grow emotionally to be an individual separate from her. In particular, I have been lucky enough to get to know a couple of older mentors who have been instrumental in my journey to achieve what I have done so far. There is one person specifically that I really trust and can open up to because I feel that she "gets" me.
However, recently there has been some friction between me and my mum because she worries that I'm talking about her to my mentor. She says that if I have a problem with her, I should come to her directly, not talk about it to someone else. I find this hurtful because I feel that my mum should know that I'm not the sort of person who would talk negatively about anyone, let alone my mum, behind their back. I think my mum feels that I don't really open up to her and she says that sometimes it's like coming up against a brick wall with me.
When I talk to my mentor, I'm not talking about my mum behind her back. We talk about many things, and sometimes my mum does come up in the conversation. But I'm not slagging her off, just being honest with my mentor about how despite the many great things that my mum did for me, there are of course some things that have affected me negatively too because no parent is perfect. I don't particularly want to open up to my mum and tell her really deep things (not just about her - about my feelings, personal thoughts etc), because I'm nearly 23 and I feel like there are some things that I need some space from my mum in. But sometimes she makes me feel like I'm wrong to want to talk to someone else and not to her about it. I don't want to hurt my mum, but I also feel I need to have my own life as an adult and build relationships with wise older people apart from her. It's making me second guess myself with regard to opening up to anyone (and tbh for me opening up is an achievement in itself). AIBU to prioritise sharing honestly with people other than my mum?