All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah and that Muhammad, sallallaahu ʻalayhi wa sallam, is His slave and Messenger.
The sister has no right to refuse or delay the division of the inheritance without the consent of the rest of the heirs. Hence, if the inherited house is divisible, then she is not obliged to sell her share of the house; her share of the house can be simply preserved for her. However, if the house is indivisible and cannot be divided among the eligible heirs without incurring harm, then she is obliged to comply with their wish to sell it and divide the price among them, giving each heir his due share. Shaykhul-Islaam Ibn Taymiyyah wrote:
“If the co-property is indivisible and any of the co-owners requests selling it and dividing its price among the co-owners as due, then it should be sold and its price should be divided among the joint owners as requested. This is the official view of the Hanbali School as narrated by Al-Maymooni (from Imaam Ahmad) and as narrated by many of the Hanbali scholars.”
For further information, please refer to fataawa 123882 and 130136. The judge of the sharee'ah court or whoever is acting in his capacity should handle the sale process in this case.
Allaah knows best.