The Fifth Amendment right against self-incrimination ought to include the right not to incriminate a child.
CNN: Washington Diary: Should a Mom Rat on Her Daughter?
2.
You try to quash the subpoena based on your Constitutional privilege against self-incrimination, since handing over the records clearly would incriminate you.
FORBES: IRS Can Make You Produce Offshore Bank Records Even If Self-Incriminating