That being said, I don't think the PKK explicitly uses these past offenses to justify their continued activity in the conflict. My understanding is that they continue fighting because the Turkish Kurds still lack any meaningful political representation, they oppose Erdogan's push towards Islamic national identity, and because the Turkish State continues to carry out military strikes against Kurdish targets outside Turkey's borders.
I'm by no means an authority on this topic so feel free to correct me if I've made any incorrect statements. It sounds like you're much close to this conflict than I am, in which case my heart goes out to you in wishing for a peaceful resolution to all of this.