Parvati might have noticed the tenting of his pants if she could look away from his face. She was aware of where he stood in that department though. When he was back hovering she could feel him brushing against her thigh though the material. She wanted to touch him but she didn't want to make this end quickly so she held back opting to move enough to cause friction.
She focused on tugging at his hair when she felt his mouth moving down her throat with one hand and exploring the warm skin of his chest and shoulders with her other, tickling her fingers against his flesh.