Crusher 4 holograms

From Memory Alpha, the free Star Trek reference

List of holograms appearing in the holoprogram Crusher 4.

[edit] Female Dance Partner

When Data tried to learn how to dance on the holodeck and Doctor Crusher no longer had time to teach him, due to the delivery of the Juarez baby, Data created this holographic dance partner and practiced with her. (TNG: "Data's Day")

She was played by an unknown actress.