Finally installed the 2 Laticrete preformed shower pans!  They're made of styrofoam with a waterproof coating and drain embedded. They're set in a mortar bed.  We had to remove the drains that the plumber had installed.   Next will be a waterproof coating around the edges.

Mom was busy cleaning up the mortar, going in and out of the house with the door open.  Osker had been going in and out too; he likes to keep an eye on her!  All of a sudden Mom looked up to find Osker standing in front of her dripping wet mud.  Apparently he ran down the hallway looking for her before he found her in the bathroom.  There was a trail of muddy water on all the "protective" paper lining the floors.  There was muddy water splashed on the walls.  There was muddy water on the wood floor.  He must have sat in a mud puddle.