Not sure if any of that qualifies as revenge, but alright.
Actually, your original comment made me daydream that the caption was Vicky was calling Grace out for being a fake, manipulative, passive-aggressive bitch and a bad mother for the entirety of their relationship, to which Grace takes exception feeling that Victoria has been stealing her son from her. The ensuing argument escalates into a mild catfight. I'm thinking a little slapping, hair and clothes tugging. When a titty inevitably pops out, from off camera Uncle Chuck shouts "Just fuck already!". Recognizing the wisdom in the old man's words, they lock lips angrily while stripping down. Nipple twisting, tit smacking, aggressive muff diving, and borderline painful scissoring eventuates. Viewing the scene slack jawed, fanbois that have been caterwauling for a present-day Vicky sex scene cry tears of joy and anguish simultaneously, knowing how close they are to attaining their true goal but they haven't the capital for a successful second effort. And scene!