Reasons for a woman in the waiting period to leave her home

Question:
This questioner, Sarah, says: My sister is in the waiting period (idDAH). Is it permissible for her to go to my family’s house to stay with them? She has an elderly father and an elderly mother. I ask for guidance. Correctly, one says “muHdadhah” (in the waiting period), not “muHdadhah” (a variant spelling).

Answer:
Yes, the muHdadhah is the one whose husband has died. She avoids perfume, avoids adornment, and avoids leaving the house until she completes her waiting period, the waiting period for death. This is the strict ruling. She does not go out except for her needs during the day. If she has a need during the day that no one else can fulfill for her, she goes out, fulfills it, and returns to the house. This is because staying in the house during the period of idDAH is obligatory. It is one of the rulings of idDAH, and it is obligatory based on the saying of the Prophet (peace and blessings be upon him) to the woman whose husband died:
So if she is able to stay in the house, it is obligatory for her to do so. However, if she is unable to stay in this house where her husband died and she was residing, and she cannot remain in it, either because she has no one with her and feels lonely, or because she is afraid. Or because the owner of the house, if the house is rented, wants the landlord to evict her.
Or if the heirs have not allowed her to live in the house, she may move to another house in these matters. Yes.