The term "dustgirlin" appears to be an with no connection to Amrita Rao in mainstream entertainment or lifestyle news. It may be a typo or a specific tag used by niche social media accounts that aggregate celebrity content.
Throughout her career, Amrita Rao has been widely recognized for maintaining a "girl-next-door" image and has openly stated that she follows strict personal principles regarding on-screen boldness. Career Context and "Bolder" Roles
The search for such content primarily reveals it to be a common type of internet rumor or "clickbait"