Terrible Incident

So I'm in a CNA program, and we're in clinicals right now. Last Tuesday, my CNA student partner and I were assigned peri-care on a 94yo. lady, who is anemic, and is covered in dressed skin sores. As we were cleaning her, she requested that my partner take off the sore dressings so that thorought cleaning could be done around the sore. My partner misunerstood the resident's request and took off all of the dressing (about 3 or 4 in total.) When the resident found out about this, she threw a tantrum, and began to cry in pain.

When the LVN was made aware of this, she told my partner and I (in a very distasteful tone of voice) that we couldn't undress any sores because we were "only" students, and not actual CNA's. She said it was "against the law."

Aferwards, I asked the LVN if we were to fill out an incident report, and she just disregarded my question. Now, here's what I was left wondering; What law, if any, did we break? And, why weren't we required to fill out an incident report?