To be fair, if Rita knew that Rick had some seemingly insignificant treasure that could bring her great benefits, she might have found a way to take it herself. The only difference was that she would have compensated Rick afterward. But Rick wasn't like that—he didn't compensate, and he shifted the blame.
After Rick sold the boots to the White family, their strength in the dungeon increased significantly. Meanwhile, the Lopez and Taylor families held a grudge against her because of it. Rick positioned himself as a protector, making it seem like he shielded her by giving away various benefits to the Lopez and Taylor families to keep her safe.
When Rick explained that the Lopez and Taylor families were mad at her because the boots originally belonged to her, she was dumbfounded. She wanted to shout, *Those boots were Rick's after I traded them to him!* But the fact remained that both families were causing her trouble, and Rick "sacrificed" to protect her.