Snowbird's LMD was one of the many LMDs created for the Project Doppelganger. They were all transformed into Deadpool's LMDs by Master Matrix, but when the original Deadpool LMD reactivated the Matrix, the latter re-transformed them into their original aspect.
Transformed into one of Spider-Man's relatives
Snowbird's LMD was later transformed by the Matrix into one of Spider-Man's relatives, but was killed by Deadpool.[1]
Notes
While her costume design is that of Snowbird, it has been colored for the Scarlet Witch