Thanks for your reply.
It is up to the Executor(s) named in the Will to decide whether any property is sold or not, depending on what the beneficiaries want to do. You do really, therefore, need to see a copy of the Will to see who the Executors are. Unless your sister is the Executor, she has no legal entitlement to put the property on the market!
Looking ahead, if you wish to retain the property and your sister wants to sell it, then the following scenarios can happen-
1. You buy your sister out of her half share (by raising a Mortgage or paying her cash if you have it) and then the property is transferred to you.
2. If there is a dispute about whether th eproperty is sold or not, your sister can ask The Executor(s) to register you both as the new owners of the property,as joint owners. Once this registration has taken place, your sister is entitled to apply to Court to obtain an Order for sale- ie she could demand that the house be sold.
3. You agree for a Sale to take place.
Therefore, if your sister is adamant that the property be sold, unless you are willing and able to buy her half share, she could force a sale, although it would mean her having to go to Court.
I hope this helps you and set sout the legal position.