Selling family home

I will try and keep this brief.My mother died 6 years ago without a will.My sister and I inherited a house all paperwork done thru a solicitor.We told the solicitor that she didn't have much jewellery but as time went on we found quite a bit my sister took home for "safekeeping" never for it to be seen again.In the six years since her death my husband and I have maintained the property(it is not in particularly good repair),in the last 4 years paid all bills.Travelling over 200 miles to the property every 6 weeks as we love it and it has been in the family for over 6o years We are not in the position to live in it at the moment.Even replacing a ceiling that fell in and a roof without my sister/her family contributing she lived locally and knew it was happening.My sister has now died without a will I get the impression that her children are going to push us for every penny they can get and I am worried we will have to sell .What is it worse is that my parents are buried at the house and no one except my side of the family have ever tended the graves I will have to have them exhumed if we have to sell as I couldn't leave them behind.

Selling family home