Been together with my gf for at least 9 years, thinking to propose to her next year by going to vacation in Santorini but i overheard her speaking to her friends that she's not ready to get married in within these 2-3 years because she still think she's young.

FYI i'm 29 and shes 26 now.

What will you guys do if you're in my situation? I was planning to propose to her next year but im not sure what to do now. I even bought a new house so that we can move out when it's done (ideally in 2027). I'm currently staying at her parent place for now.

Should i proceed with the plan or just talk to her first?