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Fingertips and lips ghost over sleek, trembling skin. She's taking care of him. It's what Turlough said to her before he went home. She knows what he really meant. It's the same thing Howard always meant. "Take care of me, Peri," he'd whisper. "Your mother never needs to know."

Her mother wouldn't have wanted to know.

It doesn't matter now; she learned how to get what she needs, and she needs to travel with the Doctor.

When he starts, she caresses him.

When he shudders, she presses closer.

When he murmurs the name "Tegan," she pretends it's her own.