I share a creative workspace with a few other people, we are all ad hoc and come in at different times. I don't have a particular schedule but I spend 3-4 days a week there on average, different times of day whenever suits me.
One person who is quite new to the space has taken to messaging me to ask if I am coming in on any given day, and when I am in always asks my plans for the week, when I'm going to be in because she likes to have company, etc.
To be honest I'm flattered that she likes my company but I'm finding it really intense. Whilst I do like a bit of casual chitchat when I'm in, I mostly just go there to get on with my work. I actually quite like having the space to myself when there's no one else in, so really I don't want her to come in just because I'm there!
I think she's a bit lonely working at home alone which I do get, but I don't really want to be her friend - I'm mostly there to get on with my work. If I wanted a coffee/ social time with a friend then I'd arrange to do that.
AIBU to tell her to stop messaging me? Am I being really horrible or do I just need to be assertive?