Catfish Day 2

Today was day 2 of catfish. Things were really weird today. The part that really got me was when Nev drove to Michigan to find out only that Megan or the girl said to be Megan was really the mom all along, Angela. Nothing fits. The pictures are not being painted by the young girl Abby, like we thought from the beginning. Angela is painting them, the mom. The picture that was said to be Angela was actually really a family friend. I'm confused why the girls were at a beach house alone, when they went to visit (Nev & Angela). Were there adults present with the girls? Why didn't they want to be seen...?