Source : Webster's Revised Unabridged Dictionary (1913)

Daintily \Dain"ti*ly\, adv.
   In a dainty manner; nicely; scrupulously; fastidiously;
   deliciously; prettily.

Source : WordNet®

daintily
     adv 1: in a refined manner; "she nibbled daintily at her cake"
     2: in a delicate manner; "the invitation cards were written up
        daintily in white and gold"