Once the H-1 transfer has been filed, she can stay in the US. She can start working with the new employer once the H-1 transfer is filed. No need to wait for it to get approved. She can start working with the new employer the minute the new H-1 was filed.
Im taking it from experience when I changed employers as H-1 visa holder.
Im taking it from experience when I changed employers as H-1 visa holder.