The son in law is a mahram

Is the son in law a mahram for his wife’s widowed and aged (72 yrs) mother? The daughter is living abroad. Can the mother go n live with her though she has 3 sons living in the same country but she cant get along with the daughters in law. Or is it not allowed as the son in law is a non mahram for her?

Mahram, Q&A / Fatwas |