or that she think you are "trying" to say "typical" things that a genuine man with long term interests says, and not sure if you are sincere...
because any man with proper intentions would say them, and also dudes just trying to score a pump-n-dump
the woman has likely had nothing but pump-n-dumps and thought every one was a legit LTR beginning. She is highly on guard and thinks you could be a PND playa.