She probably can't become a citizen.

Did she apply for N-470 before leaving US? Note it is not I-131.

1. Any absence from US more than 1 year, without applying N-470 before the absence, disrupts the continuous residency.

USCIS requirement:
http://www.uscis.gov/us-citizenship/citizenship-through-naturalization/continuous-residence-and-physical-presence-requirements-naturalization

Federal statute defining Residency, see (c) and (d)

http://www.uscis.gov/sites/default/files/ilink/docView/SLB/HTML/SLB/0-0-0-1/0-0-0-11261/0-0-0-30960/0-0-0-31016.html#0-0-0-19579

2. Language exception

No, she does not qualify for any language exemption.

http://www.nolo.com/legal-encyclopedia/age-related-exceptions-the-us-citizenship-naturalization-exam-requirements.html