Ha ha! 그녀는 그것을 진지하게 받아들이지 않는 것 같았습니다. Now, of course I dont know the mom and the whole backstory like the OP does but if the mom heard the story in triplicate, maybe she drew the conclusion from the stories that it was the OPs son who did it, or the OP herself, or just the dog, or whatever.