My wife did the same thing your WW did. She came to me out of no where and asked could I set up counseling for us. After me asking months prior and her saying no. She came up with a few excuses after I made the first appointment, and I had to reschedule once or twice. I never got impatience and I didn't badger her about going.
IMO, since she asked I would go and listen to what she has to say and what the counselor could probably get thru to her.
My wife got asked some questions by the counselor we went and saw that had her questioning her choices. Will that happen for your W. I don't know. Just giving my experience. I will say, this first counseling session is not a time to start blaming and looking to knock you W over her head. It's a great time to listen and hear what's causing her some many problems. Even, if they aren't true, they are her beliefs and she has a right to hold them.
Joejoe
M:37 W:37 T:11 M:10 S17, S13, S10, S4 BD:06/28/17 OM confirmed 07/20/17 Recon the M 10/29/17 Working hard:2gether
Onward and forward
This process is not a sprint it's a marathon! Patience, Patience, Patience.