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I am sorry to hear about this situation. It sounds like she is likely being held on what is known as a "5150" - or a psychiatric hold. See HERE for an explanation about this.
If she is being held on a 5150, then there is no right to have information about her released to her next of kin (who would be her parents) unless she had a power of attorney that gives them decision making power in cases when she loses capacity.
The parents can however challenge the 5150 hold (she should already have an attorney appointed, and if she does not, one can retain one for her).
The 5150 hold is for 3 days at first, and may be extended for 14 additional days.
If she is being held in CA, then CA would be the state where this occurs.
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