We must look a sight, she thought, and closed her eyes to see it: the three women in the middle of the Clearing, at the base of the rock where Baby Suggs, holy, and loved. One seated, yielded up her throat to the kind hands of one of the two kneeling before her. […]
They stayed that way for a while because neither Denver nor Sethe knew how not to: how to stop and not love the look or feel of the lips that kept on kissing. Then Sethe, grabbing Beloved's hair and blinking rapidly, separated herself. She later believed that it was because the girl's breath was exactly like new milk that she said to her, stern and frowning, "You too old for that." (9.98-100)
If you feel a little uncomfortable, you probably should. Beloved seems to be crossing all sorts of boundaries with Sethe. Not that you couldn't already tell from the rest of the book, but Beloved is clearly a taker, not a giver.