Even if you don't like the decisions she makes, and even if they're not the choices you would have made, you can best support her healing by supporting her decisions. Many survivors blame themselves for the abuse. Tell her over and over again that no matter what she did, it was not her fault. No one asks or deserves to be raped. If she feels guilty for not fighting back, tell her that no matter what she did when she was raped, she acted in the best manner she could.
Fear often paralyzes people.
Submission does not equal consent. She did what she needed to do to survive. Ask the survivor how she wants to be treated, especially when doing anything that may violate her personal space. Even if you mean well and want to offer comfort, remember that the person who assaulted her took away her control over her body. Be a good listener.