Can I file a lien? And how?!

My mother passed away 3 some years ago, willed the house she'd been living in to my younger sister; I'd moved here to Mississippi, almost 9 years ago, at mom's request, to assist her during some health issues she was having. She'd consistently, actually for years, insisted that the home she was living in, here, at the time of her death, would be willed to me. I've done ALOT of work on this house, both while she was alive, and after her death, was living here with her for the last 8 months of her life, have been told she left the house to my sister's son due to "loans" she acquired from my sister, but, due to the fact I'm also on SSDI, I can't afford to move or rent any other residence. I've challenged the will, the judge was constantly postponing the hearings, finally determined the will stands as written, my sister wants me out of here so she can sell the place, how do I put a lein on the place so that she will either reimburse me for the $114,760 I've invested into it, or not be able to sell the place?