Well, everyone experienced here says that escalation does absolutely nothing.
That said, their own service standard says they will contact you after 12 weeks to explain the delay and give you more information. 
She's not escalating, she's over the 12 weeks and they have not got in touch with her.
We're talking about getting in touch with the MP's assistant now.

And btw, when they say that they'll be in touch... they lie!
Service standard for FLR is 8 weeks. They send you a letter, it says in black and white that if they go over, they will be in touch. We were kept waiting for 15 weeks without a sniff of a letter explaining the wait!
