As the one spell she had mastered in all her life, the request did seem a bit unessential. But she complied brighting up her wand and pointing at her own hand. There wasn't even movement on the other side, but a head of one of the dummies recently broken in practice materialized without incantation or even was perceived to displace through physical space. In other words, it just appeared magically, if I may be redundant.

Wordlessly, Diane handed over the... head. That thing and her face looked uncanningly similar.