Frida and the Death of Dorothy Hale

For future ref, I've found two articles on Frieda Khalo which are on my To Read list:
One in the New York Review of Books and one from the Philadelphia Museum of Art where there was an exhibition of her work earlier this year to celebrate 100 years since her birth.
I'm particularly interested on her take on the death of Dorothy Hale, which is a whole research topic in itself.