What is the ruling concerning a mother who died after suffering a stroke that prevented her from performing the Hajj for which she intended to travel?

The ruling on performing Hajj on behalf of the deceased differs according to her condition before death:

If the deceased was able to perform Hajj in her lifetime but delayed it: Hajj must be performed on her behalf from her estate (whether she bequeathed it or not). It is recommendable to perform Hajj on her behalf if she did not leave any wealth.

If she was not able to perform Hajj except in the year of her death before she could undertake it: Hajj is not obligatory on her behalf, but it is recommendable for the heir to do so or with his permission. It is valid for a stranger to perform Hajj on her behalf without the heir's permission, according to the more correct opinion, even if Hajj was obligatory for her but she was unable to perform it in her lifetime. As for supererogatory Hajj, it is not permissible to perform it on her behalf unless she bequeathed it.