Lawyers say Beso owes nearly $1.8 million to CityCenter for its lease at the Crystals mall inside the resort complex.
CityCenter is owned jointly by MGM Resorts International and Dubai World.
Longoria owns nearly one-third of the business but is also listed as an unsecured creditor.
Lawyers report she gave a cash loan of just over $1 million and paid $375,000 in legal fees.