The food and water seem safe enough, even if she were just a regular fox. Nothing tastes off about it. And he seems intent of leaving her to her meal. He's keeping his distance. He's not trying to move in on her and he's not crowding her. He doesn't even seem to be looking at her. Though she's still far from trusting him, maybe he isn't the worst human she's ever come across. At least not currently. She's still waiting to find out what he'll actually do with that trap.

Finishing off both the food (see? She ate the vegetables too!) and water he brought out for her, she barks to get his attention then noses one of the dishes forward before finally retreating to a safe distance. Back to where she'd been sitting previously before he came out with the meal. She doesn't know how she feels about the shelter but she'll gladly take him up on his offer of seconds.