Re: Feeding/Behavior Issue
Well the striking after feeding could be a bunch of different things.
1) Its not unheard of for a snake to still be in "hunt" mode the day after you feed and strike at people who pass by.
2) The snake could possibly feel vulnerable on a full stomach and in an attempt to defend itself from the big predator (you) it strikes when you pass by.
3) If the tank is in a high traffic area with alot of people walking by all the time it could be stressing her out causing her to be defensive.
In order to solve this I would cover the tank with a towel or something to provide cover for the snake, or move the tank to an area that doesn't have too much traffic.
As for the feeding issue a general rule is to feed 1 prey item the thickness of the thickest part of your snakes body once a week. If the mice you are feeding him do not meet that criteria and are much smaller I would try to attempt feeding 2 mice.
Hope this helps.
Good luck.