Riley always looks uncomfortable when talking. There was no difference in her speech here than there was when she's just regularly speaking. To me, Riley was just being Riley.
As for this being on the show, I dont see it as a negative. In fact, I see it as a positive. With all the mess and stupid drama tha goes on in the show, its good to see a daughter and her father take steps to reconnect on the show. Im sure a lot of ppl can relate to that. Quite sure there are many single mothers out there who kinda keep their kids away from their dads and who love to say "Im your mother AND your father". Its good to see on TV a mother who tries her hardest to ensure her daughter links up with her father. Y'all would prefer to see bitches fighting though right? Smh.