Trust Issue Short Story

A co-worker showed me a magnetic card trick - to put a tape on the magnetic line to make it work again.
She used it on her worker card when it didn't work and she showed it to me.
I didn't see what other procedures she performed on the computer before re-swiping it, so I was skeptical and told her "But I saw it working before you swiped it", to which she replied "Yes, I passed it before to see if it works."

I felt my trust issue hurt this little friendly moment.

I know, it's a small conversation and I kinda forgot about it until it all of a sudden popped in my head and caused me to feel anxious and sigh stressfully.

I find it really sad that I am anxious of such small convo's, and I have no one to talk to about those kind of emotional issues...