Deceased Mom’s Mobile Home Park Is Threatening To Sue If I Don’t Sign Over Right To Her Home. Legal?

Try to keep it short: my mom died unexpectedly Christmas Eve of 2023 (so just over a year ago). It took us months to be able to fix up her home to the specs that the park required (new paint, porch railing, siding, all kinds of crap) and now it’s been sitting on the market bc the park charges an extraordinarily high space rent. I was making space payments all by myself for around 6 months but asked my siblings to contribute and when they didn’t I stopped paying. We’ve had multiple offers but they’ve all backed out when they found out about space rent or after meeting with the manager who can only be described as difficult. The meetings chased those people off. The park owner has now contacted us saying that we are more than 60 days past due on rent and the mobile home belongs to them legally. She informed us we need to sign away our rights or if we don’t they will sue us for all legal charges related to them getting ownership through the court. My name, nor my siblings names, are anywhere on the paperwork for the home but she says bc we have been attempting to sell the home we are assumed heirs and are responsible.

This is a scare tactic, right? To be clear, I am not arguing that they can take the mobile home from us. I’ve been telling my siblings this would happen for months. I just want to know if they can actually sue me if I or my siblings don’t sign things away.