I would get her the wooden music box. See if you can get one with a lullaby. That way she can put her baby treasures in it (get one with a lid that opens) like a lock of hair and the first lost tooth. That may make up for Mother's day.
I could only find "lullaby" with the 18 note movement... the price goes up with more notes, you can have anything engraved there too!!
http://www.musicboxattic.com/sale.html