She was a favorite author of mine in my early adolescence. I enjoyed her, "A wrinkle in Time" series and also a series about a marine biologist and a Catholic priest who carried a gun and were involved in solving crime and defeating spies. The series, as described above, sounds ridiculous but wasn't; I may reread a few books now that I think about them.
Apparently, she died a week ago but I hadn't heard until now. I learned about it from msnbc.