AITA I might've ruined my parents marriage with ASMR

AITA so I (20M) listen to ASMR every night to sleep. My step father was having trouble sleeping so I of course recommended he try ASMR. Well he did and my mother dound out and thought it was weird that he was (sleeping to women whispering in his ear). They fight about it pretty often because she considers it strange and "borderline cheating". I get where she's coming from and how it's weird if you don't know much about ASMR but it's all wholesome ASMR that he watches. Like gibi ASMR and stuff. I've tried to tell her that I told him about it and it's not sexual in any way but she still argues about it. He's stopped but she still brings it up and I just can't help but think it's all my fault. AITA