E.C.
one of my now-8YO twins went through this stage (her sister didn't) - no idea *why* she suddenly found baths terrifying and showers weren't any better (in fact, we ended up having to hang a hoodie towel over the shower head because the sight of the shower head seemed to add to her agitation). And she got over it but we have no idea how or why. So just letting you know that it's not uncommon and will pass :-)