Q. Can a non-Jewish caregiver taking tending an elderly patient, phone on Yom Tov the neighbouring children and signal them that the patient has awaken and they should come to eat with him. The children would not pick up the phone, just see from call display that the caregiver is calling. All this would be arranged before Yom Tov. Is this permitted?
 
A. Horav Shlomo Miller’s Shlit’a opinion is that if the patient is cognisant and aware, and it is important for the health and welfare of the patient to eat together with his children on Yom Tov, as it would lift up his spirits, it is permitted.

Rabbi A. Bartfeld as revised by Horav Shlomo Miller Shlit’a