Kindly refer to the following link(s):
https://islamqa.info/en/
Women covering their hair at home and in front of their mahrams and other women
Covering the hair while reciting the Quran , making Dhikr , or hearing athaan
Do Women have to wear hijab when Reading or Listening to Quran or when hearing Athaan?
Should women cover the hair when at home, reciting Qur'an, dhikr, when going to toilet?
Is a woman required to wear hijab when watching Islamic lectures on TV?
Do Women have to cover head during Adhan, when eating, going to the toilet, making wudu, read Quran