We don't want to travel to her home country just for an interview
Honestly, interviews are rare. What country are you talking about?
Mexico in this case, and going to Mexico City wouldn't be so desirable.
We'd like her to receive an open work permit
Depending on the country, the outland processing may be faster.
The outland processing time for Mexico is listed at 14 months... so in total it would be 16 vs 19 months. Worth the difference?
Thanks for the reply by the way!