Bo's fluffy personality really makes her seem like a sociopath.

I'm not sure how this escaped my attention because you are deadly right about this.

Problem 1 and 2 could have been solved by having the following happen:

Now I feel like there needs to be a rewrite Bo's history, as you said. Or, a rehash of all the previous episodes because they way you described her tying to ween herself off sounded like a much more appropriate way to treat her character.