Complex sentence: Now that her papers are ready, she hopes to get a green card following her planned one-year stay at an American hospital, before achieving immigrant status and finally petitioning for her family to live with her in the more affluent USA.
Split into simpler sentences: Now that her papers are ready, she hopes to get a green card following her planned one-year stay at an American hospital. She wants to achieve immigrant status and then finally petition for her family to live with her in the more affluent USA.