For what it's worth there's probably not any updates for her to give you. Once Immigration gets your application, it's generally sit and wait and hear nothing for months on end. London is a LITTLE different in that they generally let you know once you've been assigned a CO several weeks in, and they'll notify you about halfway through the process to do your medicals. But other than these two things, there's not going to be any updates your agent is likely able to give you.
It is a little disheartening that she originally told you five months, though - London has been sitting on 8-9 months as a rigid processing time for at least a year now.
Original Nationality: US
Visa #1: PMV (300) through Washington, D.C
Applied: April 2013.
Visa Granted: January 2014.
Visa #2: Subclass 820 (From PMV).
Applied: End of April 2014.
Visa Granted: Early July 2014.
Visa #3: 801 (PR)
Eligibility Date: End of April 2016 (Applied a month prior).
PR Granted: Early April 2017.