McGrath was banned from the building last year for breaking a fire extinguisher case during an argument.
The Oregonian reports the suitcase stowaway McGrath is 5-feet-6 inches tall, and weighs 96 pounds. She's charged with trespassing.
Police were alerted to the unorthodox entry when a caller reported that a man had kidnapped a woman, placing her in a pink suitcase and taking her to the apartment building.
Eventually, officers then searched 52-year-old Curtis T. Lowe's apartment and found McGrath hiding in a closet.
Now they really have some relationship baggage.