I’ve figured it out.
Rachel and Roula must have been knock backs from series 5 of The Bachelor.
Makes perfect sense.
They can’t cook and they are catty as anything. Just over the top snarly witches.
Rachel needs to go back to school to learn how to be an adult and Roula needs to do a year in prison to learn how to shut her mouth.
If the bachelor wouldn’t take them, why the hell would channel 7 snatch them up?
But seriously, if they were too bitchy for the bachelor, channel 7, probably don’t put them on a family cooking show.