There's a very tentative pause before Strange responds. "I suppose that all depends on who's blood is used in the ritual."

He doesn't want to sacrifice anybody else to save Arabella. She'd never forgive him for that. But if the ritual used some of his blood, if he could sacrifice some of his life to bring her back...well, he's already maimed himself to help save her. It wouldn't surprise Solas to hear that Strange would definitely consider it.