Yes, you have it accurately -- it does not really matter about what either of we two parents may or may not think about the other -- what matters most is our children and what best for them.
So for the C to shift the focus onto me all of a sudden, when S5 was supposed to be the primary subject, was indeed inappropriate -- especially when she had not to that point even broached the question of whether my "fears" might be the overriding consideration affecting S5, let alone established it as fact. In fact it seemed to me that the very change in questioning betrayed an odd degree of assumption on her part. As if she were already operating from a foregone conclusion.
I suddenly felt like she was trying to say that the very fate of S5's emotional development hinged entirely on my willingness and ability to encourage my S's to allow OM to be their "other father".
It gave me the eery feeling that the C was suddenly channeling my xW!