Grappled by Aimée, Cecilia can't punch, but she does manage to slam her head painfully against Aimée's face.
Aimée takes two more Bashing damage.
To Bite, first you have to do an Overpower maneuver, which is the same roll you've been doing (Str + Brawl - Cecilia's strength). If you get one or more successes, Aimée manages to bite. She then does 1 Lethal damage to Cecilia per turn. Because she is Hungry (below 4 Vitae), once she starts feeding, Aimée will need to roll against Hunger Frenzy at -1 if she wishes to stop before she has drained Cecilia. If she uses the blood boost this turn, that will put her at 1 Vitae, which counts as Starving, increasing the penalty to the Hunger Frenzy roll to -2.
Recall that for it to count for Samael's purposes, Aimée is required to verbally dedicate the kill to him before taking the life, and the Beast doesn't and can't think of such things.