You may wanna get your wife to send them an e-mail, same thing happend to my hubby. Our file was transferred to ND on April 18 and they send PPR on April 26th, hubby never got it, and we kept thinking it might be they're working on our file, but it was b/c IPS lost our mail and then they resent the letter with a time limit on June 9th, hubby got it on June 14th and sent everything they requested on June 17th plus additional documents on june 20th. so, now we're just waiting for the passport. I hope by next week we hear something...
Def get your wife to e-mail them to wake them up..