Is it permissible for children not to inform their mother of an illness while treating her, if she is extremely afraid of illness?

Question:
He says: Honorable Shaykh, may Allah grant you success. An elderly woman, over eighty years old, has a severe fear of illnesses. She developed tumors in her abdomen and was stricken, requiring removal through surgery and chemotherapy. He says that her children do not inform her and make the doctors' decisions on her behalf. They handle these matters for her benefit. Is this permissible for them?

Answer:
Yes. They do not inform her of it because it would cause her fear and collapse. Rather, they broaden the matter for her, saying, “May Allah will it to be good, and the treatment, if Allah wills, will be beneficial,” and the like. They broaden the matter for her in this way. Yes. Allah the Exalted knows best, and may Allah send blessings upon...