Absolutely agree with Wonka. It isn't unreasonable to take due steps, based on suspicions, to ensure that your boundaries aren't being violated. You took those steps and they were.
I think the only times this kind of behaviour becomes unreasonable are when you do that kind of thing all the time with no grounds for suspicion. Don't buy in to her perception of this.
I would think very carefully about entering into marriage.....and would firmly backtrack on any potential proposal until or unless you are absolutely satisfied that things are resolved. That isn't likely to be any time soon would be my guess.
Keep reading and posting, and take care of yourself :-)
T 13 M 7 Me 48 H 46 SS 15 BD 7.14 PA D final 5.16 (H filed)
We receive & we lose, and must try to achieve gratitude & embrace with whole hearts whatever of life that remains after the losses - Dubus