It does not matter if she took 1 credit or 101 credits, OP was a matriculated student after high school she needed to submit her transcript when applying to return to school. It does not matter if she did poorly at the first college. It does not matter that she thought she did not have to submit transcripts because she had less than 12 credits. She will have to submit ALL transcripts.
Minimally, OP has misrepresented herself in the admissions process, which is ground for having admissions at the current school rescinded at any time.
Your school will be able to see that you previously received aid. You can look up to see how much pell you have used and your loans. If you had loans, they would have gone into repayment once you stopped attending school. This could be a problem if you defaulted on your loans.
You need to come clean with your school because any monies you received because you misrepresented your self you may have to pay back