Being Amanda's caretaker, Ty now lived with her. Before now, he never knew how rich her parents were. Their were living in a true manor, with a colossal garden, letting more than enough room for the centauress to stretch her four legs.
Amanda's spacious room was on the first floor. Her change into a centauress caused some rearrangement of it, most of it being the presence of some kind of horse-box, like in stables, to let her sleep and have some kind of privacy, since she now slept standing, like horses does. Her old bed was still there, now used by her lover.
Her parents were fine with the two of them basically sleeping in the same room, since Ty was expected, as a good caretaker, to be at her side at almost all times, even in the bathroom or restroom. Amanda wished everyone will be perfectly fine with that, even her, since it's part of his sacred task, the only exception being Ty himself who would be embarrassed by it all his life.
Contiguous to Amanda's bedroom was a new room. It was both a bathroom and restroom, and specially adapted to her centauress body. (Ty still used ordinary bathrooms and restrooms for his own needs.)
The only other change to the house was in the lunch room. On one side of the dinning table, the chairs disappeared. That was the place were Amanda now was during lunch time, crouched alongside the table, her bust turned to face it. That let Ty use his favorite chair wile eating: Amanda's naked saddle. (Her horse-back if you prefer.)
Ty liked living there, he was always with the one he loved, and her parents were always nice to them. The fact that him living with Amanda saddened his foster family, now that they loved him, was a nice bonus.
Amanda's school uniform was just a version of her old one adapted to her centauress anatomy, with two little hooks in her back to let Ty fix a rein. (He need it when she's galloping.) As a chosen, Ty got a special uniform. And since he is Amanda's, he got one that usually worn by girls. But again, beside him, no one think it was laughable or embarrassing. (After all, he IS a girl's sacred caretaker! It's perfectly normal he look the part.)