I live in a small town, where you can't avoid regularly bumping into people you know. When I first moved here, I rented a room from a woman who was away for most of the time I lived there. I've since moved into my own place, and she's returned full-time.
This woman is not a bad person – but she is very, very intense. I've never had a conversation with her, about anything, where she hasn't turned the chat (within a couple of minutes max) to her childhood trauma, how bad her mental health is, and what a struggle life is for her. I've also noticed she's very negative about people; I asked about her colleagues at her new job and she was incredibly patronising about them all, she complains about her neighbours and how useless they are (they're not; they were wonderful to me when I lived there), and she tells stories about her friends that cast her in a morally superior light and make them look a bit stupid.
On the flip side, she knows I've had a very hard run of things in my own life recently and always makes sure to say that if I ever need anything, she's happy to help, not to be scared to ask for errands to be run etc.
It feels like she's trying her best but finds life incredibly hard, and her trauma has become her whole personality, which means her kindness is drowned underneath it.
I always come away from our interactions completely drained and exhausted, so have very much kept her at arm's length since she returned to town. Of course I'll stop and chat for a bit if I see her in the street, and am always warm and friendly, but I never initiate conversation over whatsapp, or organise 1:1 time with her for anything.
On the other hand, I've also made some very good friends here, and we spend a lot of time together – out for walks in the park, cooking together, running errands together.
She's seen this, and has now sent me a long text message saying she feels 'left out' and 'ostracised' by us, and doesn't understand why we aren't friends when she thought we were.
How do I tackle this without a) hurting her feelings terribly, and b) making things incredibly awkward? I really don't want to be harsh or mean, but I'm also clear that I just can't have her in my life any more than she already is.