"Make sure you don't get eaten over there," she says, half joke and half serious. Her sister lets out a quiet snort that earns a look from Parvati.
You pretend not to notice the byplay and nod, one finger still stroking your new ring. "I'll try to be careful. Do you want anything from over there?"
That earns both sisters' attention. Where Parvati just arches a brow however, Mai is clearly surprised. They both know what you just asked, but really? At this point you got used to Parvati's habits; it is fine as long as she keeps them away from you.
"You told them?" Mai asks her sister, who shakes her head.
"No. Ciel is just observant." So saying, Parvati turns back to you. "But no, thanks. Keeping the stuff fresh would be a hassle. I'll just have to go myself one day."