Just being real here for a second, this kind of shit is how I show that I care.
I'm not a nice person, and I don't do public sincerity, especially with women, and that's even more so when I'm online.

Pic related is about as close as I'll get to just saying

"Vore, I know we're not friends anymore, and I'm sorry if anything I said actually offended you, but I do still care about you on you some level. Please don't hurt yourself. If you ever feel like you really need someone to talk to and you don't have anyone else, just know that I'm here for you."

And actually meaning it.
For what it's worth, it's usually just easier and better to not show that kind of softness publicly. Also, I doubt she really cares anyway. We were never that invested in each other.