ANSWER:

This is weakness of iman from your side but it is not kufr. You will be asked on the day of judgement why you didn’t tell her about the ruling.

QUESTION: Sheikh my muslim grandmother asked me to dial a number for her. When I asked who it is she said its an astrologer. I just made an ambiguous excuse that the number can’t be called but didnt tell her that it was shirk to call astrologers and seek help from them. Is this kufr? I dont feel mightve been a good idea to tell her off.