Physical & Emotional Abuse Support Group
Abuse is a general term for the treatment of someone that causes some kind of harm (to the abused person, to the abusers themselves, or to someone else) that is unlawful or wrongful. No one deserves abuse, period. Abuse can be emotional, physical, or sexual.
The truth is that, even if he really is dying - he is no longer your responsibility. As you said in one of your responses, you are so accustomed to putting you on hold for him, to caring more about him than about you. But he is no longer your responsibility. Sure, if he really is dying then that's sad. Just as it's sad when anyone dies - even a truly evil person (not that he necessarily is truly evil), because it means the end of any even faint shadow of a chance at redemption.
The fact that you care is a mark of what a wonderful, loving and compassionate person you are. You shouldn't (in my view) try to not care, but do try to not allow it to become in any way your responsibility.
The funny thing was tho, it backfired. She wasnt that upset at the prospect of him dying and sees him as a liar now.