Blood clots in the lungs...scary stuff. Prayers for her.
I had two small clots in my lungs several years ago. I was in some pain for two to three days. Fortunately, the clots were rather small and did not collapse my lungs. My brother had large clots in his legs. His pain was much worse than mine. His clots did not dissovle until several weeks.
Sounds very scarey, but she may be just fine in a week or two.