Need advice on structuring a deal

[Donna Florio]

I recently bought a house to flip, and it turns out it will cost much more to renovate than I'd budgeted. While talking with a new contractor the other day, I told her I was considering trying to sell to another investor. She told me she'd like me to hold the mortgage and let her rehab the house. She'll pay me back once the house is sold. But I don't own the house outright--I have a construction loan from the bank. Can I legally/ethically do this? Or is there another way we can partner? I've heard of people talking a homeowner into letting them rehab the house then splitting profit. Could that work in this situation?  Looking for some great Bigger Pockets advice here!