Blac Chyna is asking the courts to help her regain equal time with son King Cairo.

Custody and visitation of the 10½-year-old son of the model mom (born Angela White) and ex Tyga (born Michael Stevenson) is at the center of an ongoing legal battle between the two.

In new documents obtained by PEOPLE, filed in Los Angeles County Superior Court on Monday, Chyna, 35, lays significant allegations against Tyga, 33, when it comes to issues in their co-parenting relationship.

The paperwork reiterates Chyna’s request for 50/50 physical and legal custody of King, as well as for Tyga to handle legal fees related to the matter. After explaining the former couple’s backstory and noting they previously began the process of creating a formal custody order in 2014 — with them later “informally agreeing” to work things out outside of the legal system and the matter ultimately being dismissed in 2019 — Chyna claimed this isn’t the first time she’s felt that Tyga has “tried to interfere” with her relationship with King.