She reminds me of Other Mother from Coraline. Funny enough in the book version, she swears on her own mother's grave. When Coraline mentioned that she didn't know Beldam's Mother was dead, she said. "I put her there myself and when I found her trying to climb out, I put her back." Bit of dark comedy. I never really could grasp what her mother would look like, but I would imagine her doll form would be something like what you drew here. Unless you're trying to make an OC, if this is meant to be a fan art than maybe something along the lines of "Grand Beldam/Other Grandma/Granny" would probably do the trick. However if this is an OC, probably something related to what she looks like like "Granny Button Eyes" or some variation.