The problems of Emily Grierson in the story "A Rose to Emily"

In my English class we are reading the story "A Rose to Emily" and my teacher has asked us to find a similar problem that Emily had (mental problems, depression are the words that are similar to the problems she had).

Study guide to Lichen and John Wyndham.

Where can I find a good study guide on the biography of Lichen and John Wyndham?