Off to the side, and very subtly concealed behind the bear Rey was serving as spectator while the prince sparred. If asked she would explain that she was very clearly just on a fact finding mission - determining whether or their new guests were going to be any help against the rising threat of the White Walkers.

And for the most part that was true - however, she was also just plain staring at him, peering out from behind the back of Ringo, hopefully not noticeable.