Do whatever it takes early game to get Kayle to stop farming. Play a lane bully, ask for ganks, 4v1 gank the Kayle if the opportunity arises.
She needs a TON of items to be good (her shortest path to power imo is
and that's 6600 gold.) From there she will likely build 2 more damage items, including
and by then you are in a tight spot but if you can engage whenever she tries to go back top to farm you are golden.
Once Kayle is full build and her team is permagrouped you are basically completely fucked. Unless you have someone who can outpower her (
)
At least, that's how I see it.