She felt bad for Miss Scrimgeour but kept her eyes trained to her station rather than allowing them to follow the other girl out lest she think that Calla was trying to rub in her success or taunt her. In reality, what she felt was more aligned with pity - she would have hated being the only one dismissed and she knew Miss. Scimgeour prided herself on being the best - but she didn't think the Slytherin wanted her pity either. She was, however, slightly impressed that Mr. Macnair could simply glance at her potion and tell her exactly what she'd done wrong. Guess she needed to weigh her ingredients more carefully next round. Nose pinched she started in on the potion.