Rain, Rain, Go Away!

Ugh.  Everything happens when Daryn's gone!  All this rain and we have water dripping from the room through our bathroom vent/fan … again.  This has happened on at least a handful of other occasions.  However, this time it is really coming in and the paint around the vent/fan is bubbling.  I honestly don't know what to do and I am not going to figure it out by attempting to know what I'm doing and climbing on the roof or into the closet crawl space.  Urgh!  In the meantime I have a bowl catching rainwater.  I may have to go to the largest bowl we have.