Dd1 is 23 and the oldest of 3 girls. She came back to live at home last year after graduating and is currently working in the leisure industry.
Up until a few weeks ago, she was very easy and lovely to live with. Usually eats with us and happy to chat or hang out with us in the evenings (but no pressure at all from us to do that, we recognise she's an adult with her own life and we have no expectations how she spends her time).
A few weeks ago she started to become quite aloof with us, less chatty, giving one word answers, eats dinner and then immediately leaves the table. Dh and I tried to talk to her to find out if she was upset with anything or us. We asked if it was to do with dd3 (17, currently doesn't speak to dd1 but that's a whole other issue). Dd1 insisted it wasn't to do with her sister and said she finds talking hard so we didn't push it. The only thing we thought of was perhaps she was trying to come out as gay to us, but actually I don't think it's that.
She is of course entitled to her privacy and doesn't have to tell us anything but I'm finding it very hard to live with someone who seems to actively avoid us and barely says 2 words to us.
She did have some mental health problems in Year 13 but resolved with medication and therapy. I think she might have gone back to medication over the years but not sure, but she does seem quite on the ball of her own health.
How would you handle this?