I don't see Renoir as the type to just give up on Alicia.
He's tired and needs a break.
Let the man have his coffee and croissant, then he will be back to retrieve Alicia before she can truly lose herself and perish in the canvas.
I'm sure it will cause another Painter's war that will last a century, but that's what fatherhood is all about.
Maybe Clea too, but I don't see it considering her "do what thou will" attitude.