We are older parents and 17 y.o. difficult child 3 has started getting a ssi check. We were told that this is to ensure that she stay in HS. She is under the impression that she can just bank the entire amount for her own purposes. We have just the recipients of her fury. We tried to explain that this is meant for her upkeep. Can anyone here tell me what the ssi rules are about the use of this money and how this must be documented? She is refusing to go to the ssi office to have them explain it all to her in person. I'm so sick of her verbal outbursts, I can't wait until she is 18.