Is it possible to get a bone marrow transplant and then receive hair transplant from another person?

Bone marrow transplantation carries a risk of treatment-related death, graft versus host disease, and HAIR LOSS as one of the side effects.  Your idea sounds great on paper but I hope there aren't any doctors willing to do this even overseas. 

Of course not. The only person who could give you their hair is an identical twin. But I cannot imagine that would even consider going through a procedure as complicated and expensive as a bone marrow transplant for the sole purpose of having an elective procedure ?

I doubt it would be wise to become an experimental subject exploring an area where this has never been done successfully. The best way to make a female to appear to ahve a thicker head of hair is to get scalp micropigmentation. See below

Bone marrow transplants are painful, risky, and expensive. I cannot imagine that any ethical physician would do this so you can have FUE hair transplants.