Jax Taylor and ex-partner Brittany Cartwright are feuding publicly again after Taylor posted — then deleted — a leaked email accusing Cartwright of neglecting their son Cruz's therapy and educational needs, calling her claims "sick."

Cartwright and "The Valley" co-star Zack Wickham responded Monday, with Wickham calling Taylor "delusional" and Cartwright detailing years of therapy and individualized-education-plan advocacy she says she's provided for Cruz, according to Reality Blurb.

The exchange is the latest chapter in Taylor and Cartwright's contentious co-parenting relationship since their split, which has repeatedly played out across social media and reality TV, per Reality Tea.