If she wants an upright riding position, have you looked at the Giant Avail? It's the woman specific model of the Defy and ranges in price from $700 to $1,370. Giant also has the Avail Composite and Advanced Series that include Ultregra Di2 group sets and are in the same price range as the Treks you looked at.
__________________
HCFR Cycling Team
Ride Safe ... Ride Hard ... Ride Daily
2017 Colnago C-RS
2012 Colnago Ace
2010 Giant Cypress