"Hey." Sarah places a hand flat on the table, not quite a slap, but close. Something loud and quick to get Helena's attention. "Be respectful."

She holds eye contact with Helena until she's sure she's gotten the message across, and that Helena isn't about to lash out. God, she feels more like a babysitter than anything, most times. But she needs this to go well. As well as it can go. If it doesn't, there could be long term consequences that she's not sure she's prepared to deal with.

"This is Cosima," she says, "one of our sisters. Our family." The word sisters is very subtly emphasized.