No outside bath at the farm

[Lizwiz]

To complete the "Shoot the Leaf Bird Quest" I was hoping to leave Sarah in an outside bath at their farm but there was no bath.
I must have missed something. Maybe I was supposed to employ a plumber to put a bath in for them. Any advice on this?

No urgency because I completed the game without this quest, and got a really terrible ending.
At some point later on I will replay the game of course.