Scared looking for real advice

Went on vacation and took advantage of low cost to get some routine blood work done. My wife's blood work came back that her hemoglobin was at 7.3 And we did a glucose test. Her fasted state was 92 and 2 hours after the high glucose drink her reading was 61. The hemoglobin level caused great alarm. We went to the ER and the test was confirmed hemoglobin at 6.6. Doc prescribed 3 B12 shots and iron pills and follow up blood work the next day. Well we weren't going to stay in the country for a transfusion. Our plane was scheduled to leave the next day. We are back home. Concerned and so scared. Tomorrow she is going to get some labs done to check specifically for anemia B12 folate excetera. Any advice/insight is appreciated.