Im going to trust the author for now, this obviously is so unhinged but there will be one day where jinjoo laughs at the idea of destroying doyeon because of her trauma.
I see it as, jinjoo’s trauma of falling in love, she’s mistakingly clumping her husband and doyeon together solely for the fact that she’s fallen in love with both of them (Doyeon specifically right now) so jinjoo is thinking that one day, just like her husband, Doyeon will inevitably mistreat her. WHICH WONT BE THE CASE, its so hard rooting for doom toxic yuri, but i’ll stay optimistic