Rebecca suddenly felt herself losing altitude. It didn't take her long to realise why. She was briefly tempted to try and resist Thomas' powers with pure force: To see which of them was the stronger. But that would just have been pointless posturing. It was much more sensible to flow around him. So instead of trying to stay where she was, she moved rapidly sideways. Gravity was only being increased in one specific part of the field. If she got outside Thomas' reach, then she'd (hopefully) be free of it.