Castle of Pride

Bellatrix knows how useful it would be to have a Metamorphmagus in the service of the Dark Lord, and she has the perfect candidate. All she needs to do is to send her down the path that leads to the Dark Arts. So, the day before her niece leaves for her first year at Hogwarts, Bellatrix pays Nymphadora Tonks a visit, intending to convince her to join the Slytherin House.

Nymphadora arrives at Hogwarts, has a nasty encounter with the youngest generation of one of the most prestigious pureblood families, and finally, is sorted. Where is she sorted, and what are her reactions?