yeah it will hold up to 15 miles a week no problem.

she won't be able to keep up with you though because it weighs 30 pounds.
and it costs 2/3rds of a kilo or the like with so much less performance.

seriously, it's not a good buy. why not have her get a target road bike, save fifty dollars, and be able to keep up with you? or are you trying to coordinate outfits...