Obviously no one can tell you how long it will take, but current applications are taking around 85-90 days to receive an Acknowledge of Receipt (AOR). The AOR will include her application number (she should already has a client ID).
If she has been waiting for 2.5 months (e.g. 75 days), then I would estimate she has another 10-15 days to wait.
I have taken this information from trackitt, where the most recent application to receive an AOR was filed 11 August 2014 (AOR granted 7 November 2014).
Whilst not perfect, I have found trackitt to be an excellent tool to understand where my applications (likely) sits in the queue and I would advise more people to use it, thereby improving the data quality.
http://www.trackitt.com/canada-immigration-trackers/canadian-experience-class