First of all, if I were itsallyourfault I would change my username before getting into a marriage situation.
Also, when you say “They seem to be compatible hashkafah wise and they get along well” are you sure that it is not just that “they get along well” and that is why they “SEEM to be compatible hashkafah wise”?
Having been in a similar experience, I realized that the girl is never going to say “you’re not frum enough for me.” Instead, she will make up some silly excuse so you can never figure out why she is really not interested. Reading between the lines, I would say you should try to figure out if you really ARE compatible before getting into an uncomfortable situation.
Best of luck!