Can a mortgage lender come after assets in an irrevocable trust if the home goes into foreclosure. I am in Missouri.

No one in the family is interested in purchasing the home, and we are trying to sell it now. We received a notice from the lender that we are nearing foreclosure. After contacting them, they told me they would come after other assets, even they there is hardly anything there. Do they legally have a right to these other assets since they are now in an irrevocable trust?