Yes, that shouldn't hurt anything overall. In general, eating hair isn't a good idea but I can only imagine the amount of hairs we consume over a life time! This will have no affect on your growing baby! When's baby due?
No worries here. The digestive system and the reproductive system are quite separate! Even if the hair had been treated with chemicals the quantity would be too small to have an effect. Buy your mom a hair net for use at meal prep.