Please forgive me if this is not the correct forum for this issue.
I just finished filming a documentary about a motorcycle rally, including concerts. One band was three teenage sisters (who were awesome BTW). I got performance footage, autograph signing, and on-camera interview with them. Mom signed a release for them. I wish I'd stopped there. I then interviewed dad about the band, but when it came to the release he wanted to further review. Got an email saying he couldn't sign because they need to be "unencumbered" for potential TV deal in the works.
Where do I go from here legally? Mom as parent and legal guardian gave the ok, so can I use the girls' footage? I obviously can't use dad's footage, but does his refusal force me to cut all the girls? Am I asking for trouble for my project, or potentially harming their deal if I move forward? Can I use the performance footage as "public fair use" but not their personal interview?
I am in Mississippi, United States, by the way. Thanks for any help. I hate legal gray areas. lol.