Laer- she DEFINITELY left her swim suit home because NOBODY swims fully clothed indoors, especially when they sell these Tznius bathing suits by now.
So why the snood? I dunno, if I left my bathing suit at home I’d just skip the pool. She had already done machines and a class, and she was just walking in the pool, not swimming. And she didn’t hesitate before getting in the pool, just walked right in as if it’s what she usually does! The whole thing was just bizarre.