Trouble the little woman

Coming out of the stairwell, Olivia Fu's expression suddenly changed. She quickly walked into the bathroom, gritted her teeth and gently slammed her plastered arm against the wall. The next second, her face was filled with pain.
Looking at the time, it was almost time for Song Yuan to come over for her daily visit, Olivia Fu hurriedly climbed the stairs back to the ward.
Her arm was already hurting badly, and after climbing six or seven floors in one breath, by the time she returned to the...