First of all, you need to confirm intrauterine pregnancy by doing one blood test
for beta HCG and one TVS scan for viewing gestational sac
I-pill contains levonorgestrel
which is progesterone
and does not causes any ill health effect to fetus before 4 weeks or confirmation of pregnancy. So, she has nothing to worry about this.
Start to take folic acid
supplements, protein rich diet, avoid long journey/heavy work, maintain personal hygiene, take adequate bed rest and repeat scan after 4wks of first one for detailed feto-placental well being including cardiac activity/ fetal pole etc. Do periodic check up and complete suggestive investigations.
Be well & take care.