if you are a minor (under the age of 18) and seeing more than one mental health treatment providers they ....must....share information, have meetings to make sure both treatment providers are on the same page and not accidentally causing a situation where what one is doing with the minor is different than the other. in mental health terms this is called Continuity of Care. minors do not have to sign release of information forms. their parents or guardians are the ones that state whether treatment providers can talk to each other and work the case file together, usually parents do sign all the paperwork that gives treatment providers the permission to be in contact with the other treatment providers.

those that I know when a parent has refused a treatment provider access to the other treatment providers and the minors mental and physical health records is usually because the parent wants to hide abuse or other problems they dont want to be discovered. usually parents are very open to their under aged daughters or sons therapist being in contact with the psychiatrist, simply put if one doesnt know what the other is doing it can cause some down right dangerous to the child situations.

my suggestion is talk with your mother, let them know that you do not want your therapist talking with your psychiatrist. then if it is possible to not have continuity of care your mother might have to sign a special form saying she is not going to hold either of your treatment providers responsible if something harmful happens due to no one sharing information with the other.