Just looking at the birth indexes. Cant see any Sophronia Chase. There are a surprising number of Sophronias (I Had never heard of it before) - where did you find out that her surname was Chase? Might she have been married before and thus born not as a Chase?
Though , silly me, of course if she was having a child in 1853, she would have been born before Civil Registration began in 1837, so there will not be a birth reg in the indexes! I'll think again.
WHen did they emigrate?