Tried to test the waters by touching my crush's arm. She asked me 'Do I have something on my arm?'. Is she telling me to back off?

Anonymous
My crush always seems to accidentally graze my hand, sometimes grab my hand, lean in close etc whenever we are together. I took it as a sign that she wanted physical contact, so today as we were sitting together, I gently caressed her arm and then she suddenly asked me "Do I have something on my arm?" To which I replied "No I just wanted to touch you", and then she went on like nothing happened.
Is that a go ahead sign or a back off sign?
Tried to test the waters by touching my crush's arm. She asked me 'Do I have something on my arm?'. Is she telling me to back off?
3 Opinion