There was a blog from a GC on BabyCenter, and there were comments from some other GCs after. The one thing they seemed to agree on was that the medical nature of the procedure that impregnated them and the lack of genetic connection created an emotional distance for them. Ouch!
Now, since my kids are double donor-conceived, I'm in no different position biologically toward my kids than a GC. For all the partnered women using their partner's sperm, I don't see how you could feel like a GC. For my own part, I wanted the children inside me so desperately, I don't think I ever felt like anything but their mother during pregnancy.
When I had some problems was at birth. I ended up needing a c-section, and I had been in induction for eleven hours with pe, and then I reacted badly to the anesthesia for the c-section, so they basically showed me each baby as he was removed and checked out and then they whisked me off to bed and the kids to the nursery. When they brought them in the next morning, I looked in the bassinet and thought, "Wow, I had someone else's children."
But scientists believe that human women are evolutionarily programmed to care for other women's children, so that took over, and I became their mother again. You might feel like a GC intermittently, but bear in mind that plenty of women who conceive naturally with their OE sometimes feel a sense of distance or alienation from the baby they're carrying, too.
Maggie (in VA)