Peter heard Peggy's voice before he noted her, and he put his book away to look down at her. Grinning, he dropped his book and caught it on a shot of webbing, swinging it in through his window before he decided to maybe give Peggy a tiny heart attack.
Creating a swing on webbing, he dropped it down behind her as she looked around, and then scooped it behind her, the swing having a bit of a back on it to keep her from tipping over backwards, and then he suddenly drew her up into the trees with him.
Grinning as she came face to face with him, waving at her, "Hi."