Alright so some context for our relationship and why we broke up. I am a fairly depressed individual and so was she, however she was also fairly abusive and the only reason, towards the last third of the relationship, of me sticking around was to try to make sure she didn't hurt herself. So when I left it was because I couldn't handle her being emotionally manipulative any longer and I needed to support myself. 

Anyways I would say about a month after the breakup me and a buddy are playing MTG at local games store and I get a text from her asking to talk to me. I agree and we begin to text again, and after some small talk I ask her the reason for her texting me again. She reveals to me that she has a tumor that they found out to be a malignant form of Melanoma. Of course I feel bad about this but I'm still in a place where I feel I can't get close to her so I tell her I'm sorry to hear that and I hope she gets better.

Well other mutual friends hear about this and since I didn't offer any emotional assistance, not trying to be more there for her or anything I am in the wrong. She ended up getting it removed and it was all fine so at least that turned out well. So am reaching out to see what you guys think, was I the asshole?