The folio should tell you if the original land certificate has issued or not- however you should ensure the folio you have is up to date before checking- i.e is it an old one you discovered lying around the house or have you just obtained it from the land registry. If you have just obtained it, have a look at the front page at the bottom. If it says No L.C., then there are no title deeds issued and you can immediately proceed. If it says Land Certificate issued, then go to the page where the registered owner details are and check on the left hand side or below the details of the registered owner where it should say where the land certificate issued to. Your mother in law can then obtain these, assuming the land is in her name. If the land is not in her name then she will have to go about getting it into her name before she can sell part to you. Her solicitor will advise.