[OOC: I know Petunia's not in the open to list BUT LUCY GAVE ME PERMISSION, so glare at her if Petunia's completely unwanted!]
Petunia had been thinking about cooking, considering baking when James had suddenly dashed away. Eyebrows raised, she stared after him. "... so you don't want lemon cake?"
Grabbing her wand, she hurried after him. She had no clue what was going on (and had no clue that Peter was involved), but it obviously wasn't good. He was faster than her, but even if she'd lost him she could have found her way to the commotion, the noise that was being made. In the back of her mind her thought train ran to Death Eater attack but that notion was quickly dismissed as she realized it was Sirius fighting... Sirius. Petunia just gaped as she came up behind James, baffled.
"What the hell?" She yelped, looking around at the men from the doorway.