Having an inflamed cervix is also called cervicitis. It is common and is usually caused by an infection.
More information:
"Cervicitis is most often caused by an infection. However, in a few cases it may be due to chemical exposure or a device inserted into the pelvic area such as a pessary (a device to support the uterus), cervical cap (a birth control device), or diaphragm. The presence of the foreign object may make the cervix more susceptible to infection.
The condition may also be caused by an allergy to contraceptive spermicides or to latex in condoms.
Cervicitis is very common, affecting more than half of all women at some point during their adult lives. Intercourse at an early age, high-risk sexual behavior, multiple sexual partners, and a history of sexually transmitted disease increase a woman's risk of cervicitis.
A woman's risk increases if her sexual partner(s) have engaged in high-risk sexual behavior or have had a previous sexually transmitted disease. Gonorrhea, chlamydia, and trichomonas are commonly seen sexually transmitted infections that can cause cervicitis...."
http://www.nlm.nih.gov/medlineplus/ency/ar
ticle/001495.htm
When she goes back for the follow up, don't be afraid to ask the doctor questions. He or she would be able to give you more information as well as information about what it means for your daughter specifically, whereas we can only give you general information and a list of possible causes.