We have Anne. I'm sorry you are at this stage. Our first one was when DS was on the brink of admission due to his self injurious behaviour, the only saving grace being his age (then 6).
I'm well used to professional meetings, but for some reason I found the first CPA meeting extremely difficult. It caught me off guard. Perhaps because we were at breaking point and didn't know how to help DS. I was terrified he was going to be admitted, with difficulties finding an appropriate bed for his needs, where realistically he would likely be the youngest and potentially pick up others unwanted behaviour. I had the last worry at the CAMHS day unit too. I was on my own, DH was at work and had already had lots of time off that year, but looking back I wish DH had been with me for the first one.
You should have regular MDT meetings. DS' is around every 6 months, sooner if necessary. Does DD already have a care coordinator? If not, she will be assigned one. DS1's is brilliant, as was his previous one.
With your input a care plan will be developed that sets out DD's needs (physical and mental) and what support and help (medication, therapies, social care, help with everyday tasks...) she requires. Her goals, strengths, education planning. And what the risks are and a risk assessment (for example there are a few specifics that are high risk for DS1 self harming in his - being left alone, nighttime, unlocked windows, stairs, stone walls).
It also covers family circumstances (DS1's mentions DS2&3's needs and DD1) and housing/finances if there's any concerns there. Finally there will be a plan of what to do in an emergency or crisis (for DS this includes physical health emergencies and unplanned admissions) and contingency planning.
As far as possible DD's views will be taken into account. DS1 is present for a tiny portion of his reviews and doesn't say anything. We and other professionals collect his views prior to each meeting. He has very poor insight into his difficulties and finds a room full of professionals overwhelming (unsurprising). You and everyone involved should receive a copy of the care plan afterwards.
If you are nearing the point of admission since DD has ASD has anyone mentioned a CETR? If so the outcome will be in the CPA too.
Happy to answer any other questions about it.
Zoo it is all about the money for the LA. DS1 costs them £££.
The questionnaire sounds like it hasn't been adapted for CAMHS use. Very inappropriate. Where are you with DS' EHCP?