PTSD Recovery?

Hi - this is my first time posting something here
My girlfriend has complex PTSD and while I don't really think of myself as her carer I hoped that this would be a good place to get some advice anyway.

She is actually doing quite well at the moment from what I can tell - but something that scares me is that when she has been doing badly in the past and I've tried to be hopeful she has said that she doesn't think people really ever recover from PTSD. This is a very daunting prospect because we are both quite young (in our 20s) and the relationship is still relatively new. (Her diagnosis is also relatively new as well) But I do really hope that we will be together for a long time - so a big part of me is really hoping that her mental illness will not be as big a part of my life as it is now in the future. I was hoping that someone here would be able to tell me if they have had any experiences of seeing a loved one really live a full life with PTSD.

I do understand that this is something that will always have an impact on her life in terms of being a very defining experience that she has had - but I am just hoping that she is not destined to suffer, like what I have seen so far, forever.

Thanks for reading this & hopefully thank you to whoever is willing to reply