Nicely done! Hanging a door well is not easy.
I hear you and this is why government organizations get such a bad rap, because of people like the CPS agent. They are human, they have biases and really there is no room for that in that type of job. It's very unprofessional.
I don't suppose there is any way to petition to have someone else take over your case.
Seems to me that people like that have some "thing" some way of thinking that you have to address to get on their good side. The trouble being you probably don't know her well enough or haven't spent enough time with her to know what it is she wants or is looking for.
I guess the alternative is to throw all the law you can muster at them.
Anyway, rambling but just want you to know that I hear you and the frustration is terrible i'm sure.
And you didn't sound whiny to me at all.