I really like
Carol.
My mother's name is
Caryl (pronounced the same way), and my sister is
Caroline, so I have a soft spot for both of these names. To many people
Carol comes off as very much a baby boomer name since it became so popular in the 50's, but I think it would be sweet to see it on a little girl now. I would definitely consider using
Caryl (spelled this way to honor mum!) or
Caroline for a girl.