TR ...
I apologize for sounding so flippant in my earlier post, it's just that there are probably thousands of low-hour (300 TT) CPLs here in the US who are in the same boat as your friend. In the States we unfortunately don't have the kind of internship programs available from BA, KLM, etc. where a newbie pilot can attend airline-specific training from day one and be in the right seat of an airliner 300 hours later. We have somewhat similar schemes that can be had for LOTS of money and no guarantee of a job after the 250-hours of regional SIC (Gulfstream, et al). Quite different, that.
However, based on the shortage of flight instructors in some parts of the country your friend may be able to find a small school that would sponsor an H1B visa for a CFI. Does she instruct? That's the general route here to the airlines. Instructing often leads to right seat 135 charter time after around 1000 hrs, but wouldn't she have to convert her licenses to FAA before she could instruct here? Also the H1B visa is a bitch to get folks to deal with, but it IS possible.
An idea ... I've seen ads for CFIs at some of the larger flying schools like E-R, Comair, and such. A larger school like that would perhaps be more knowlegable about visa and licensing requirements and may even be interested in a CV if she is already an instructor. Give one of them a call and try to speak with a manager-type person, as opposed to an admin flunky who may just firewall you.
Good luck to her,
Snakum