It's obvious to Stella that the twins have a cold. She can tell by the sound of their breathing. Propping them up with a couple borrowed furs from her pile helps them breath better. She had already gotten the i told you so look out of the way to her mate. Her hope is that she doesn't catch their colds herself. Perhaps she would have to have a conversation with the eldest monk again, ask if she had gotten sick like that as a young girl. It had been awhile since she had talked with him. Right after she and Dagger had made up.