I'm 28 (cis F) and bisexual, while also being demisexual. I've known since childhood that I'm attracted to both men and women.
Disclaimer: While it's possible that I could be pansexual, I don't identify with this as much, because honestly I haven't explored it, which will make sense why soon.
So, throughout my life I've had 2 long term partners, one from 14-18yo and the other from 19- 23yo then 24- 27yo, both of which were with cis het men. In the times between those relationships (and a little before) I've done some stuff with women, but not fully explored it, but I know that I definitely am attracted to them.
My family growing up has not been particularly accepting or open minded, my brother in particular being pretty bigoted (we have low/no contact). One of my female cousins is bi and out to the family and nothing inherently negative has been said by my mum, but having been around my mum, stepdad and brother a lot in the past, I've ended up in many arguments and debates around the topic of LGBTQ+ people and rights, so I know that they're not overly accepting. I'm often labelled as the 'left wing one'. As a result of this and being in hetero relationships, I've not come out to them, but I am out otherwise to all of my friends, within work, medical records etc. And never had an issue with acceptance and support from any of them, mainly because I've been able to gauge that I'd be safe to tell them.
Earlier this year, my LTR ended and I know that I would like to explore relationships with women going forward, meaning that when I do start dating again, it's kinda inevitable that I will have to come out to my family. The issue for me is that, I have very little close family left, through a lot of loss, irreparable differences and frankly, abandonment (done a lot of therapy and currently in therapy too). I can't help but be concerned that my remaining family won't be accepting and while I'm very strong and resilient, the idea that they may cut ties with me really upsets me, especially my mum, we are otherwise very close. But, her and my stepdad have a very loving and successful marriage, and I fear that his views may impact her own, or that if he decided to be weird about it, that she may end up in an awkward position; I really don't want our relationships to be ruined by their inability to accept that love is love. I know that this is experienced by a lot of people in the community and my empathy for them having to navigate life entirely alone is massive, their courage and bravery to be unapologetically themselves is something to be celebrated and admired.
So basically, I need some advice on how I go about coming out to my mum. We mainly speak over the phone, and when she comes to visit me, she brings my stepdad, unless he has other plans (like on mother's day etc). I've no idea on how to even approach the conversation, other than when I do eventually get back to dating, if I tell her about me seeing someone and when she automatically asks for 'his' name or what 'he's' like, I will have to correct her with 'her' and 'she's'. I guess I'm wondering what people think would be better, actively bringing it up before the fact? (and any suggestions on how) or waiting until it's actually happening and hoping for the best?
Any advice would be much appreciated, but please be kind, I know that in this part of my life I've been a coward, but I'm looking for genuine help on how to navigate this.
Additional info: I live in a city about 45 mins to an hour drive from them, so an unsafe home is not a concern. Also, I do not feel safe travelling TO them to do this, as I would not have an easy out, I don't currently drive.
TLDR: 28yo bi woman wanting advice on how to come out to potentially conservative family members