Lina is a powerful sorcerer, who practices black (destruction) magic, drawing on the power of Lord Shabranigdo, as well as the Lord of Nightmares to fuel her biggest spells.

I was thinking she'd probably use Malfecia, and incantations as her primary practice and tools. She'd possibly be a Hermetic.

Chise is a sleigh beggy, a human who is a wellspring of magical energy, and attracts spirits like moths to a flame.

I'm thinking she'd have the Nephilim and Spirit Magnet merits, and probably a lesser degree of the Spirit Magnet flaw as well.

She might be a Dreamspeaker/Verbena, or maybe an Orphan.

Some things get a bit hazy, particularly when they don't map well, but I'd love to get some suggestions or thoughts.