Tax Returns

I'm helping my sister to apply for DACA. She's 17 and she has being in the US since she was five-years-old. . Do you thing her school records and medical records are enough to prove that she came to the country before reaching 16?

Also, I'm planning to send my parents tax returns, but on the tax returns includes her IT number.

School record should suffice.

I sure damn hope so because that's all I had (one piece of medical record stamped back in 2006, vaccination reports, and report cards from there till now).

Thanks guys..