1. Rarely. If I want to handle a snake, I get my rat snake or one of the BRB's out. The BP's I generally leave alone except for one who I take out maybe once a week just to handle.
2. Depends. Some eat more than others. Some prefer smaller meals than others. Some will eat more often than others. If you aren't sure, start at once a week and make adjustments from there.
3. Probably realigning her jaws which come unhinged when eating.