That's true, and because of that, he couldn't be around her that he left town.
Yeah, she thought Gin was dead along with the rest of their family in the fire. She was found after the fire and adopted by a couple changing her surname to Coolidge.
I'm not sure if she made out that she was dead after being tortured by Mab, or that Mab just assumed she was dead, but she was lucky to survive.