Alters dying doesn't work that way. They can "kill" themselves and they can integrate, but it's kind of like a conservation of mass situation, in that there's never anything stopping them from being recreated/reborn, and they can't really go killing each other. Also wow this was hilariously dramatic. The only good panel imo was the one where some of her alters are just like doing other stuff in her head while she's talking to them.
Also like it's always hilarious to me that every piece of media I see about DID is just about some scary alter doing scary things, and like with the 6 systems I've interacted with (4 of which I dated), the most scary thing any of their alters did was say shitty things to other alters (which like sucks when there's already self esteem and self harm issues but...) or tried to self harm. Meanwhile dating other singlets has lead to me having to actually wrestle a partner to get a knife away from them x.x
Direct me to the DID fluff mangas please.