There's an aura of calmness around her, a felt sense of coming in peace, of not doing anything these swablu don't agree with.
When she gets close enough that they've definitely noticed her, and can definitely hear her, she stops, and speaks. There's a layer of intent to her words, something that makes her more understandable, to the point that even if Audrey didn't know the language, she could probably understand this.
"Hey there, Swablu. I'm a trainer, and my friend here is a brand new trainer too. She doesn't have a starter yet, and when I was showing her pictures of the local pokémon, she thought y'all looked really cute, pretty, and strong, and she'd love it if one of you would fight by her side. Maya and I are willing to challenge you on her behalf. What d'you say?"
She's not entirely sure this bunch have been around humans enough to pick up the language. They probably have, but she's not going to take a chance with her new friend's starter.