Hi Marissa,
Sorry to hear the SSA cut off your daughters SSI. The amount of SSI she recieves is based off of the household income. I remember recieving letters from SSA saying my daughter had been overpaid and they were reducing her SSI until the overage was repaid.
Ive found that having all my household financial information in order and doing research on the SSI rules, especially for submitting appeals to SSA. When dealing with the people of SSA i simply treated them with respect, provided all the information required and asked if there was anything else they needed. Id follow up a week later asking for status and when a decision was likely to be made. My daughters SSI stopped when she started recieving Social Security when i retired.
Hope this helped.