A Muslim woman does not have to wear hijaab in front of her non-Muslim mother's husband

No File Exists
Check below answers in case you are looking for other related questions:
It is not permissible for a girl to wear short clothes in front of her parents under any circumstances
Can he take his mother to the market when she is wearing a short abayah?

No File Exists
Related Answers:
It is not permissible for a man to obey his parents by making his wife not wear niqaab
Ruling on celebrating World Hijab Day
Correct view on the ruling on covering the face
It is not permissible for a girl to wear short clothes in front of her parents under any circumstances
Can he take his mother to the market when she is wearing a short abayah?

Recommended answers for you:
Salat al-Tasbeeh
Virtue and times of regular Sunnah prayers (Sunnah mu’akkadah)
If she sees some brownish discharge after her period ends, should she pray and fast?
Ruling on vinegar made from wine
Mawlid al-Nabi (the Prophet’s birthday)