Nice headcanon you have there5:26 to 5:28
Either she's lubing a dildo while roleplaying then using a stick-on for solo play or she's actually kissing someone before she's about to get railed.
Of course you don't hear plapping because they might be clothed on the groin while doing it on a bath mat. You don't hear the guy because he's wearing a facemask.
Again, this might just be me being paranoid af.