I recently took in a 6 year old cat who's owner passed away last year. (didn't find out about that til 2 months ago when I took her in). Lately though when I go to pet her or she comes to me for attention she will start licking my hand, rubbing up against it really fast, and then bite, but the bite is not hard though there's never really much force behind it and its never hurt me. Does anyone know what it means?