If it were me, I'd have just refused to sign it and let her take the risk that she didn't own the code. It was her changing the arrangement after the fact, and

If it were me, I'd have just refused to sign it and let her take the risk that she didn't own the code. It was her changing the arrangement after the fact, and if she'd wanted an NDA and invention assignment she should have brought it up ahead of time. He was doing it for "free" because he was doing a class project and saw it as a learning experience. He not only didn't get paid, or get equity, but in fact paid for the opportunity to do it. The idea that there is any conceivable reason why he should in any way be restricted in the future is sad. Hopefully the "agreement" is simply a copyright assignment on the physical code.