Yichud with a Foreign Caregiver and a Dependent Woman
Question
Answer
Hello,
The answer is provided by a rabbi at the Beit Hora'ah.
You did not specify in your question the state of understanding of your mother.
If she is in a state where she knows and understands, there is no concern of Yichud with your father, because 'his wife guards him'.
However, if she is in a state of lack of understanding, this permission will not help. There needs to be a 'shomer', meaning a person who can enter even at night sometimes.
According to the instructions of the Gaon, Rabbi Avraham Fried, shlita, cameras do not help to prevent Yichud unless someone is currently watching the camera, and not when it is only theoretically possible to view the recording. And certainly, it will not help when the recording is on Shabbat and viewing can only occur after Shabbat.