MRW I get out of a game with a REALLY toxic player and immediately get a report feedback from it

context: Lux midlane wanted to invade enemy j4 at red, me (sion) and our jg (ekko) weren't so keen on the idea so we told her to back off. Immediately begins calling us both noobs and b****es for not helping her and continues to do so throughout the match. She also tries to get the enemy team on her side saying that we were being toxic to her, apparently it didn't work.