If you're taking a portrait, shouldn't everybody be facing the camera? If so, what would they remove? Your stomach? I think it would look really strange to see somebody with no midsection. Regardless, Photoshop doesn't work that way. Everybody believes that doctoring somebody out of a photo is a few clicks. Wrong. There must be data to work with first. How can you remove a person from a photo when you don't know what is behind the person? Dust marks and skin blemishes are easy, they are small enough that the human eye won't notice a little creative blending. A skilled artist can blend faces together and work some real magic. Photoshop is a fantastic tool, but it is certainly not some magic bullet that will do whatever you want quickly. So to an actual professional Photoshop user, your story sounds like she was just busting your balls. "Photoshop out your gut" is not only illogical, it would require more work than the studio is willing to do.

you shouldve asked why she didnt photoshop out hers aswell:)