Her goal had been to study for her CoMC's OWL. She'd read through Fantastic Beasts but that didn't detail practical methods of husbandry.
So she'd gone to Hagrid, to pick his brain.
Only, being "Dumbledore's Apprentice" apparently made her all levels of trustworthy.
"...Hagrid, when I agreed to follow you into the Forbbiden Forest, I thought you'd be showing me Unicorns."
"Oh, Gwarp's 'armless!"
She took in 16 feet of child and silently disagreed.
"Do the Centaurs know he's here?"
"..."
"...Hagrid?"
"It's fine. They like kids. Now, when dealing with giants..."