How do you respond to a chronically ill and complicated friend on facebook who posts about illness updates?

[sugar1973]

And then they get upset with you if you don't read about their updates? I don't like using FB that much, but I don't deactivate for other reasons, such as contacting relatives on there, etc. I have a friend who has a chronic illness (has MS and a benign brain tumor), she gets upset when I don't know up to date details of her life. I have my own pressures with family yet I do want to be an emotional support to her when I can. She has so many other friends who support her, but I feel targeted when she does see me--I don't give her feedback with what she does on the internet. Should I feel guilty for limiting what I read from her on the internet? To add, our friendship became complicated when she started flirting with me--I think she was sexually confused or wanting to "experiment" with me as her female friend. That further distanced me from her, but I wanted to stay friends to support her emotionally with her illness. I see her in person only occasionally and I don't email her because of her behavior.