So I just got a year and ahalf old ball python from my ex girlfriend about a month ago and im wondering if she was under fed. My ex claimed to have been feeding the snake 2 adult mice every two weeks. When I got her I gave her proper time to settle in and I fed her two mice every week for two weeks. Then I read about proper sizing for meals and bumped her up to a small adult rat every weeks until now. The problem im having is that she is nipping my veins. She seems calm, happy, and enjoys being handled, but the past week she has been nipping me. She will calmly crawl up to one of my veins (a lot of my veins show on my hands and forearm) nudge her head against it a couple times, open up and chomp like she's eating a mouse. Im wondering if the single bigger rat is enough and if I should give her 2. The mice she used to get were half her thickest forth and the rats were about the same thickness. Any help from experienced owners will be much appreciated.