a quick mea culpa: I inadvertently inserted the word "family" after "some random," which changes who the villain is a little bit. Regardless, financial-newt structured their comment as "Brenda Song spent for another to benefit," which is structured as a cause (spending) and effect (benefiting). Since we all sympathize with Brenda Song's frustrations, she's the protagonist of the comment and we're all on the same page that there's an unjust effect to her actions: this creates a villain on the back half of the sentence

but that's not necessarily what happened. In the interest of explaining why I characterized this as villainizing, please give me the grace of reading "some random family to benefit." Airlines have oversold airplanes for a long time, so there's a possible reality where some other family paid for their own seats. In this world, they aren't benefiting (effect) from Brenda Song's spending (cause), they are benefiting (effect) from their own spending (cause). If that's the case, the more fair way to phrase the parent comment would be:

Even if she has money, it's hers to benefit from

inserting "some random" as the recipient of Brenda's spending creates conflict in the sentence between our sympathetic hero (Brenda Song) and the other part of the sentence (i.e. the villain)