Did Kangana Ranaut pen a letter to Shahid Kapoor's wife Mira?

Did Kangana Ranaut pen a letter to Shahid Kapoor's wife Mira? Enough is being spoken about the alleged cold war between 'Rangoon' actors Shahid Kapoor and http://www.bollywoodbubble.com/gossips/did-kangana-ranaut-pen-a-letter-to-shahid-kapoors-wife-mira/