Rolanda worked at Hogwarts for four years before finding out why they hired her. She'd been mediocre in her interview, dismal in her qualifications and one applicant among twelve. One of those other candidates had - she found out in a shirty letter - once been Head Girl, Ravenclaw Captain and flew for the Arrows till she was injured trying to defend another player.
Rolanda had never asked because she hadn't wanted to know. If it was pity because she'd screwed her life up, then at least she'd been hired. If she'd slept with someone's relation, then that was embarrassing, but she wasn't going to cry over it.
She never let herself think they chose her for her. After all, she wouldn't have.
"Rolanda, what did you do with that boy who aimed a bludger at you, Thomas Gudgeon?" Minerva asked her, quite out of the blue one morning. Rolanda screwed up her eyebrows, confused - that had been in a lesson, not a match.
"I gave him one hundred lines… His brother recently contracted lycanthropy, I thought I'd give him a break."
To Rolanda's surprise, the older woman smiled. "Good. I knew you were fair when we hired you."