I don't get why she would have them to it that way. There are a few reasons why you wouldn't want to do it like that; possible loss of sensation in the nipple, looks like shit, etc....
The preforable way would be do make a small incision at the base of the breast, insert the bag, fill it with saline after it's inserted, sow it up. Shorter recovery time, and the scar it A LOT smaller and not as noticable. She's an idiot for having it done that way IMO.