The board is being so supportive in me having to deal with the manager while she trains me

They are making sure there will always be a board member present so she can't push me around and be unprofessional or abusive

I feel guilty because of how upset this is all making her (even despite her leaving voluntarily).

I will now be the next villain in her story that was once a friend, and is now an enemy. Usurping her place at market and turning everyone against her

I don't care.