"I met with her last Friday. She is in such a bad psychological condition that she cannot speak with other people. Sometimes she can, sometimes can’t," Tarasov said on Monday.
The lawyer added that since February, Osipova has been under a forced 4-month medical treatment in a federal medical center at the US military base Fort Worth, Texas.
"After this treatment, the judge will decide on her competency to further participate in the process," Tarasov said.
The lawyer did not rule out that he will request her transfer to a private clinic.
She became a naturalized US citizen in 2004 and fled to Russia while pregnant with her third child in 2014. Her second husband filed for divorce and was granted full custody of the two yongest children, who are believed to be in Russia.
The Russian consulate in Houston told Sputnik on Monday that diplomats are in touch with Osipova's family and her lawyers, as well as with the institution where she is receiving medical treatment. He added that diplomats are ready to provide her with any necessary support.
If convicted, Osipova is facing up to three years in a US federal prison and a fine of up to $250,000 on the international parental child abduction charge.
