A colleague has had cancer for several years and we have learned she is now in palliative and not expected to survive beyond another couple of months.
I don't know her very well, we are not friends in the proper sense of the word but we have always had a very good and friendly working relationship. She has been very open, almost matter of fact, about having cancer, but not talked intimately to her colleagues about how she feels about it and her fears/prognosis etc. She's a very private and guarded person and has made it clear she's not comfortable talking with us about this.
A few members of staff who know her have been made aware in confidence by our boss that she has been told by doctors that there isn't much more they can do and she is in palliative. She hasn't worked for several weeks and is not expected to work again.
Question is how to show solidarity/love/support to someone who you know professionally only, but have respect and care for. I'm not close enough to her to send a letter or email expressing my sadness and regret, she is not a friend in the true sense of the word and I think she would see this as a violation of her professional boundaries and it would make her uncomfortable. She is surrounded by friends and family and wants for nothing in terms of physical support, so I think offering practical support would be weird. I have offered practical support to her family members and they have (gratefully and respectfully) signalled to me that they don't need any.
I just want in some way to express that I've enjoyed working with her, I respect her and will miss her a lot and to hope that she is comfortable and as far at peace as possible. But I want to do it in a way which isn't intrusive and doesn't make it all about me.
Would be very grateful for any advice from people who have been through this with a family member and can advise on what's helpful and tactful.