Hi
What comes to mind here is dishydrosis or pompholyx. “The name pompholyx comes from the greek word for bubble, which accurately describes this disorder. The vesicles tend to erupt on the sides of the fingers and palms, and often on the dorsal aspect of the distal fingers, where the skin is anatomically similar to that of the palms. The condition can also affect only the feet. Some patients have involvement of both the hands and feet.” Thus, this skin condition may appear as whitish fluid filled bumps that appears beneath the skin. They may also be covered by a somewhat thick membrane. The vesicles are extremely itchy and they do not pop readily. They may involve the hands, fingers and the soles of the feet.
Source:
http://www.medhelp.org/posts/show/553583
Is this similar to your daughter's case? You may ask your doctor about this as a differential.