SOLVED. YA paranormal novel read mid-2000s (no later than early 2008) about teen witches in New England. [s]

[maddie (thenmaddieread)]

The book starts with a mysterious ritual on an island in New Englandc. A teenage girl might drown, or is supposed to die but doesn't. A teenage girl returns to her family's town in New England. She has a beautiful red headed cousin who is wealthier than her. The cousin's name might be Cordelia, and the MC's name might be Madeline/Madeleine. It's at least a duology -- runes feature heavily in the second book, and are on the cover, I think. Magic/magical abilities have been a part of their family history for a long time.

There's an abandoned stone building in the forest, I think an asylum but maybe a hospital. I think it's named something like Blackthorne or Blackhill. There's a bad boy love interest for someone. (view spoiler)[ the cousin might be pregnant or have a baby at the end of the first book (hide spoiler)]

[Ayshe]

Sisters of Misery?

[maddie (thenmaddieread)]

YES! Thank you!

[Abbey]

I have been thinking about and looking for this book for what feels like a decade!!! THANK YOU!!