What your mother does is notmrequired at all, she’s burdening herself unnecessarily and it would be a biddah if she thinks that it’s essential in Islam to put on a scarf in front of mahrams.
Kindly refer to the following link(s):
https://islamqa.info/en/82994

I had argumnt with my Mother and in end, She replied to Ask Aalim.So I have none other better than you shk to ask. Question is : Is it necessary for My Mom to Always Wear Head scarf at home(With her brother,son etc.)? I said No, but she is not accepting my Claim. PLease help me Sheikh.

Women clothing | October 14, 2017 7:02 am
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sheikh, if I am in my full hijab and I wear shoes made of denim material, will it still be considered imitating men? are denim shoes particularly for men? plz help as I need to have comfortable sports shoes to go for walk.
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I want to sell dresses through a few women-only Facebook groups. These dresses are tight and exposing. I don’t know if the purchaser will wear it in mixed occassions or women-only occasions. It’s hardly ever possible to guess from looking at their profiles. So is this permissible?