Did she get the gate code in a previous email? If so, just go there and then head to the office. If not, she should try to call the Michigan number and get it. If she doesn't get a response, she will just need to go to the property and wait for someone to open the gate, then go to the office. I honestly don't know how often they change the gate code, but we haven't been there this year YET, so don't know it.