John MacPherson , Feb 19, 2010; 04:26 a.m.
Collaborate, talk about what she'd like, suggest a clothed practice and review the images so she understands what required. This is all about psychology and winning her trust. She needs to know beyond doubt you understand both her insecurities and needs. Assuming your photo skill match your interpersonal skills you can do some really beautiful life-affirming images for her.
" I think she is beautiful" you said, so let that inform your work - let her know that too in the way you speak about the shoot and her role, stay open to suggestions from her, but let the session flow as she feels it needs to.