What sort of things do I need to know if I will likely be in a probate dispute?

Specifically my sister and I have a trust and co-own some property which includes a barn. The barn is across the road from a lakefront cottage.

I’d like to for once in my life store things in the barn until I find a new place. I’m hoping for about a year from now. She is willing to sue me to force the sale.

We both live in Michigan and the property is also in Michigan. TIA for any advice or insight.