I hosted a workshop event on Friday and Sunday. I invited a photographer to take pictures of workshop participants and I had every participant sign a permission statement that these pictures could be used in a final presentation.
Now, there was one girl, which was 14 years old and her parents signed the permissions to let her take part and the permission that I can use the photos.
The parents weren't happy with the workshop and they won't let her take part on the Sunday event. Also they withdrew the permission to take photos of their child. They wanted the permission back physically and I couldn't do much but giving it to them.
Now I have the problem that this girl is on most of the photos and I need photos for the final presentation. Is it OK to use the photos but pixelate or obscure the child's face? Or do I need to even respect the parents' request to not use the photos?
Notes: I gave the parents the permission back, also I'm 18 and this is my first workshop or event I'm planning so all the people I'm working with don't trust me very much.