HELLS YEAH MAGDA IS A REGULAR SPROUTS CUSTOMER. Where else is she gonna get her nutrition!?! She probably sees Devi a lot then, and knows her as a fellow vegan, will engage her in friendly (which translates to polite, but it's Magda!) conversation, likes her, etc!
Lila will know Magda as the robotic little sister who's been living with Miguel up until now! 8) She's a little pared down in comparison to Lila, though it wouldn't stop her from being polite. She doesn't try to mess with Miguel's circle~