My partner and i are going through a tough time and i believe she is a narcisist. How do i determine this i have done a little research and it all helps but i really dont know.
We have had alot of stress in our lives over the last 6 months.
I don't personally think it is up to you to diagnose someone no matter how well you think you know them. It takes a professional to have a truly professional diagnosis.
I think sometimes we are very quick to look for fault in our partners and not see the things we ourselves are doing which brings our partners to acting the way they do.
You've had a lot of stress in your life over the last six months as you say, so maybe rather than being Narcissistic perhaps all she's looking for is a way to feel good about herself. Maybe she just wants to know that life can be better than it is and rather than thinking there is something wrong with her perhaps there's actually something very right with her.
I would suggest you both get counseling for your stress and relationship issues rather than try and do a diagnosis.