She hadn't been expecting him to release her arms so suddenly, and fell abruptly forward, nearly hitting her face on the ground. She only just got her balance, then shifted her arms to support her weight. She rested on her forearms, head against the ground, tangling hands in her own hair both out of frustration and for comfort. He didn't seem like he was in any particular hurry, which she both appreciated and didn't. She appreciated it because anything that inadvertently lead to her not being a bloody pulp was at least somewhat good. However, it didn't do much to to subvert her "he almost certainly wants to do this forever" theory.
He pushed in again, a little further this time, spreading her cheeks apart as if to emphasize how wide she was being speared open. Her eyes snapped open as he rubbed past something that felt good on his way in. It was then that she realized that from this angle, she could see clearly between her legs, see... if not how much he had in her, at least how much he didn't. It was alarming, considering how it felt sort of like she had an entire battleship in there. Still, she could tell he was a while from bottoming out even in terms of how deep she was. He really was just going painfully slow.
Well. Better than painfully fast...
She watched for a moment, hypnotized by the slow in and out, astounded that the sheer girth of him was fitting into her despite her slim build. Then she felt claws on her spine and stiffened; fear. They raked lightly down the base of her spine and her back abruptly arched, pulling her head off the ground and back into the air. She clenched automatically around him, then whined at the pain it caused, trying to make herself relax again. Another stroke against her spine had her clenching again, this time right as he pushed in, and she let out a noise between whimper and moan as the head of his cock brushed against that Very Good Spot again. She let out a sharp huff of breath, wiggling her hips slightly, wondering if she could arrange herself somehow so that he'd hit it again.
Then she wondered, idly, if she could coax him into doing anything else that felt good. Most of the men she slept with couldn't be bothered, or were way too into it once she brought it up, but he seemed... suggestible, if not stupid. And he was only a man in the absolute broadest sense of the word, anyway. Tentatively, she reached back to find one of his hands, not sure what his reaction to being touched would be, considering she'd been clawing at him about five minutes prior.