I have always thought that it was relevant that Dulce's bio father had recently expressed his intent to Noema in gaining custody of Dulce before she was abducted. It became more relevant over time, seeing how she just vanished, and her remains have never been found.
Mimosa, you have brought up an excellent point. Noema answered Dr. Phil's question about who she thought might be responsible for taking Dulce by saying some guy who she used to know happened to see her with Dulce and asked if Dulce was her daughter. How ridiculous is that for your only suspect? Dr. Phil's team didn't do the research before she was on the show and his show was a total fail imo.
I also suspect that he and his team have washed their hands of Noema because they think she is lying, and that's why they have never come through with their reward. jmo