When we fed this week we had 3 in various stages of the shed cycle. 2 were like yours, the other had her shed about half off her body. All 3 very happily snarfed down their rat, then went back to the business of getting the new skin going.
We offer regardless of shed cycles, some eat, some don't - we leave it up to the snake to decide.
A wonderful sticky on the shedding process....
http://www.ball-pythons.net/forums/s...ad.php?t=28794
Another to help you if a shed goes bad.....
http://www.ball-pythons.net/forums/s...ad.php?t=43403