My ex is terminally ill but...

I still wouldn't even bother entertaining a conversation with her nor do I feel bad about it. She almost slandered me publicly a couple of days ago with false accusations, blamed me for how $u!c!d@l she is now (ironically, I wasn't the one that ended the relationship so among other things she claimed I've done...), in a video where she also revealed her prognosis of her only having two years to live. I'm at the point where I've already moved on with my life but her video popped up in my feed. I'm not sad, not angry, it was more like looking at an exotic animal at the zoo like, "Wow, that's something else." In this case, "Wow, you never changed but got worse. This is literally a sociopath coming out and lying to her friends and audience point blank for sympathy." Still, it's in the back of mind because the only truthful thing she stated was her life being cut short. I kinda hate myself for being unrelentingly cold about it, but I have my reasons and it's not just over a petty video either. This woman almost destroyed my life and got me killed. So on that, I won't give too much thought on it. I'm just venting.