emails are easy to forget the details of. I would still talk to her about it. She has the option of speaking her mind and stating if she doesn't want to do the SCA now.

When you said you knew what she was thinking about doing the SCA, that is very different than asking her if she is willing. There was a question there that wasn't asked directly. She may have chosen to not read your mind to acknowledge the hinted at but unasked question. This is important to you, and deserves its place in your therapy session.