1) I'm really sorry your D got deferred. I'd suggest your D follow the instructions in the email and send some additional information. Good luck!
2) Let me tell you, actually, your D increases her chance for admission to the college as a regular applicant after she got deferred from EA.
Please call the admissions office, and talk to the officer who is responsible for your D's file. Then, tell this person that the college is your D's first choice and she is very disappointed with the deferral decision. Your D also should ask the officer the reason caused her to be held back from being accepted. This way, she'll be able to correct the mistakes.
As you know, your D needs to be polite when she talks with the offcer over the phone.
Good Luck!