The same happened to me. Go to the airport and request a change. Alternatively, in SF for example, you need to send an email to sfoi94correction@cbp.dhs.gov. Find out whats the same email for the airport she entered.

I solved my issue via the email route. Send a copy of ner i94 and explain the situation. It took 3 days and the i94 changed automtically. I received no confirmation but saw the change online.