Have you ever saved a dying relationship?

So currently in a relationship that lasted 6 years and it fails like the relationship slowly dying out. We both care for each other a lot and can count on one in another for anything. but I feel like after all the shit we been through with each other the last 2 years it’s died. Has anyone ever been through anything Similar? She wants to be married but am not ready for it after what we both been through. She’s plans on getting treatment for her ptsd as part of our argument to fix our relationship. Am trying work on getting over a girl I date during a break we had that I still have strong feels for even through it’s been 8 months.
Have you ever saved a dying relationship?
Post Opinion