As Isabelle approached the house, it was clear that Katie and Tim were close to finishing another round of breeding. She was already horny and trying hard not to lick up the cum on her face, but the thought of some of that cum also being in her pussy made her slit gush. With no panties, Isabelle began feeling enough of her juices building up to threaten to slide down her thighs. But what else did she feel? Was it jealousy? She knew her father must have loved her just as much as Katie's dad loved his daughter. Isabelle assumed she would be fucked properly when the time came, but...