Do you think Regina will try to find a way to bring Daniel back?

If there were a way possible then she would surely do it but she's already stated she believes there's no way of getting him back. I don't think it would be possible to bring him back either but I would absolutely love for them to be together again!

She did try at first. It was revealed in The Doctor that her initial purpose in learning magic was to find a way to bring Daniel back, but after the attempt to give him a new heart failed (she didn't know the whole thing was orchestrated), she pretty much gave up on resurrecting him and focused on avenging him instead.