First, make her use the phone to call the taxi. When the screen that asks you where you want to go appears, select any destination. You will be told that the taxi will arrive shortly. When the taxi arrives, make sure she gets in it. It will drive off with her inside. The loading screen will appear. Your destination will appear and you will see the taxi drive up. The woman will get up, look around, then go into the store. You still do what you can do when she is not pregnant unless told she cannot use that item. However you can still get to the shops. Note: You must use the taxi and not your own car.