FWIW, in regards to the trip to juvenile court...
MB says in her interview that her grandmother (mother of AB) is always very supportive of her. And that if she had known about the court date, she would have been there. The reporter asks if she didn't tell her about the court date, and MB starts some mumbly word salad, along the lines of things being discussed prior to court that she couldn't share with her grandma. (Which, of course reeks of bs, given that this mystery person who supposedly had Evelyn was MBs grandma's own daughter!)
Anyways, huge grains of salt aside, considering the source, this comment led me to believe that court was definitely Evelyn related.