I take it she accepted your resignation ???
as you are still sitting in your dept and the fact that the other girl left recently you may find you "manageress" comes back with a proposition to keep you
If she dosent own the Co then she is also accountable to a superior & possibly wont want to be loosing staff at one per week.
If my line of thought is Bolox and you do leave just get down to the nearest agency & take atemp job to tick over whilst you gather your thoughts & make plans for future
best not to dip into your house savings unless ou really have to
Good luck
BTW i need drum lessons if you were closer to brum