The Sentinels glitter and shine

Sarah was unaware that there was a size difference between her and Wraen. How could she know, if this was the first time she actually saw, what did that blob of flesh and fur she had been pushing around in the last few days, looked like?

Therefore the other's concern made her pause in the middle of action and stare at her sister with a dumbfounded look. What was going on now? Was there danger? 

The moment of confusion lasted only for a while, because it was then, when Osprey decided that it was time for yet another bath and picked Sarah first. She gave out a little protest, but then gave up.