Lately I've been woken up in the wee hours

by the unsheathed claw of Riff the kitten. It's not a hard scratch but enough to wake me up. She's got bizarre feeding times that I'm trying to correct. Her belly alarm goes off at 4am, and she begins the scratching, wanting food.
I've tried feeding her late at night but her internal alarm still rings at 4.
It's annoying. As I usually can't get back to sleep and 4am is too damn early to be upright and awake.
Do I ignore her until a decent hour?