She had not been expecting to have someone all of a sudden behind her. So she reacted as she would when anyone was foolish enough try to sneak up on her.
She spun around and hit him with the messenger bag containing her lunch as she drew her wand. Then when his voice and face registered, she frowned at him severely rather than hexing him. "I'm poking around," she said in a low voice that wouldn't travel beyond the bushes surrounding them, "because someone was syphoning off my creek. There are farms past me that rely on it." Valmae poked him in the chest. "And what are you doing creeping around like this? Do you want to be hexed?"