And the most interesting quote from the comment section:
Patrick Clancy
Planes have security cameras. If what she said is true, then there is proof.
Yes!
Btw, did it mention if the aisle seat was empty or taken? Fwiw normal people always move a) out of middle seats and b) at the least over one seat to give some space. It's just what normal people do on planes, at the movies, etc.