Tracey posted a Facebook message dated August 5 asking for prayers and support for her and her sister.
She is currently in hospital with a severe form of meningitis. Because she was not medically inducible, her doctors don't know when she will be released from the coma.
Deadline Tuesday was informed by Dowse that her sister is still in a coma.
‘Insecure’ Actor Denise Dowse In Coma
Tracey said that her sister is a "vibrant actor and director that should still have many years ahead" and that her "thoughts and prayers are greatly appreciated."