I'm assuming, as there usual is, quite an age difference between you and this hopeful good girl as you put it?

If she has her own business, clinic or whatever it is and is reasonably self-supportive (educated), it would be unlikely she'd be looking for an older bloke. No offense.

If she has exaggerated about her profession, then it is highly likely she is making herself available to whomever can care for her financially the best.

If you have doubts, some of which sounds like you're own insecurity, best to move on.

And there are plenty of Thais with a decent lifestyle. Holidays, drinks out and meeting friends is the norm for many!