The New York Daily News says Deleese Williams got the boot the night before her surgeries were to start. She says the about-face ruined her family's life.
Her lawyer says producers nixed her appearance after a dental surgeon told them her recovery time would be longer than expected. Williams claims getting dumped shattered her family's dream and triggered her sister's suicide.
Williams is suing for money damages for breach of contract, intentional infliction of emotional distress and other offenses.
In August, five orphaned siblings who appeared on "Extreme Makeover: Home Edition" sued the network, along with the construction company and their foster parents.
The siblings, who range in age from 15-22, claim that after moving into their new house, a nine-bedroom mansion, their foster parents, Phil and Loki Leomiti, engaged in "an orchestrated campaign" to drive them away by insulting them and treating them poorly.
That complaint alleges fraud and breach of contract. It seeks unspecified compensatory and punitive damages.
The children ultimately moved out of the Leomitis' home in Santa Fe Springs, California, a small city southeast of Los Angeles, and are living separately with friends, said Charles Higgins II, the eldest sibling.