The bank isn't responsible to verify use of the money, and that is a legal question. Generally the funds must be used for the benefit of the minor. While medical bills for the minor sound like they meet that requirement, you can verify with an attorney if you are afraid of legal questions being asked about use or accountability.
The second part of your question is similar in that giving the funds directly to the minor seems contradictory to the reason the account was established. If in moving out your daughter also becomes emancipated, this may be moot as she would no longer be a minor. So again, you don't have to provide funds, and you may seek specific legal advice before you do.
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AndyZ CRCM
My opinions are not necessarily my employers.