The ruling on one who left off the sa'y in 'Umrah

Question:
Our sister, the questioner Umm Sultan from Riyadh, says: Honorable Shaykh, may Allah keep you safe, we went to Makkah to perform 'Umrah with my mother. When we started the tawaf, my mother performed it alone, and I do not know for certain if she completed seven circuits or not. Then we went to the sa'y area, but my mother did not perform the sa'y. She said, “I am tired, my sons,” and she refused even to ride in a car to do the sa'y. Then we returned to our country. What is the kaffarah (expiation) for her now?

Answer:
As for the issue of tawaf, since she performed it and did not mention leaving out anything from the tawaf, the default is that it is valid, if Allah wills. As for the sa'y, it is obligatory. If she came to Riyadh and left off the sa'y, she is still in the state of ihram for 'Umrah. It is obligatory for you to return with her, avoid the prohibitions of ihram, return with her, and have her perform the sa'y and shorten her hair to complete her 'Umrah.