VIDEO : Blac Chyna Celebrates With the Kardashian Kris Jenner?s Mother?s 82nd Birthday

Blac Chyna attended Kris Jenner?s mother?s 82nd birthday party with the squad of her future in-laws despite her recent disappearance from Rob Kardashian?s Instagram feed. Though Rob was not seen in the any of the family photos and, therefore, was presumably not in attendance, Chyna still wore her engagement ring despite suspicions that they had broken up over the weekend when he deleted all of his Instagram photos of her. A source tells Us Weekly that the couple was working through an ?explosive fight? brought on by stress from maintaining their brand.