[quote=@kitramos]
well first thought is maybe more like steampunk style gadgets that are powered by her magic.
[/quote]

Hmmm... Since they have no knowledge of anything magical prior to their encounter with the amulet, we would need to do her abilities in such a way that works with the story. If she's a bookworm, maybe she read a lot of stuff on fantasy machines from fictional stories, and her new powers somehow give her the ability to build those machines for real. Or another idea is that she develops the ability to read special magical writing in Calbert's collected books that even he himself never managed to read. Like, when anyone looks at the pages, the writing seems like a jumbled mess, but her brain is able to put it together and reveals plans and blueprints for machines that can aide them in their fight against Mephista, her corrupted Thrall, and their army of monsters.