A young stoat full of energy, Hermione is Sherlock Yack's helper and trainee.
She's there during every investigation, trying like the young viewer to find out who the culprit is. Hermione and Sherlock are like friends and accomplices, full of tenderness and mutual respect.
Hermione admires Sherlock for his flair and his intelligence... but doesn't mind criticizing his bachelor ways whenever she can. A fan of technology, she tries to get Sherlock to adopt modern methods... which isn't so simple with a recalcitrant yak!
One last detail, Hermione hates the bagpipes. That's a topic on which they can't seem to agree.