ANSWER:

It’s his house and he can definitely bring his mother for a visit once in a while. 

Your mother should be thankful to Allah that she’s living separately from her in laws and not living in a joint family like millions of other women in the subcontinent

QUESTION: My father sends money to my grandmother, who’s happy in our home country. During her visit in early 2024, she showed dislike for my mother and caused tension, sometimes making my father angry with us. She took my sister’s toys without asking to give to my uncle’s son. Now, my father wants her to visit again, but my mother and I feel uncomfortable. Should we refuse?”