@CurlyLocks
It is well documented that appropriate family support leads to better outcomes for patients.
Treatment and care teams are bound by patient confidentiality and unless your daughter gives permission for them to liaise with you, they are not able to give out any patient specific information.
Perhaps letting your daughter know you would like to support her better and asking her how best you could do this. You could ask would she be happy for you to accompany her as a support person at her pdoc appt and if she would be happy for you to go in at the end and perhaps ask some questions.
I am wondering if you feel you have pertinent concerns that she may not have mentioned to her pdoc. The treating team are however at liberty to receive correspondence on these, but be aware it would be a one sided conversation and they may reveal to the patient that they are in reciept of this which may not go down well with your daughter.
There are many ways you can be supportive, information is readily available for carers via Sane fact sheets, "Your health in mind" website of the RANZCP and other reputable sites like Beyond Blue.
The other thing is that supporting someone with MI can be very draining and it is important to take care of our own mental health. Support is available through groups like Carers Australia however the govt is restructuring carer funding at present and providers are in transition until they know if they will get ongoing funding. The Carer Gateway lists current supports.