Why morning naps are uneffected while afternoon's are terrible? If pain is the problem I think she'd cry every time I put her down. Instead she's waking at the 45 min mark, only in the afternoon.
With DS first two teeth he nly got upset in the afternoons, this is also when they cut. With these top teeth he seems to get upset at night. So they are all diff and move at diff times.
Personally I am thinking there is something going on with all the crying. This usually means discomfort for us. Maybe a cold or a virus? Sometimes we cant see what is going on esp if they have sore tummies or throats. Have you medicated to see if it makes a difference?
I am also wondering...what is her exact age in weeks? Could be in a developmental leap. There REALLY affect some LOs....
http://blogginaboutbabies.wordpress.com/2009/04/24/wonder-week-37/(For example we had 1 week of screaming around 12am, real upset, frightened screaming for up to an hour, then...it just stopped)
You could also have some SA going on, it peaks around now