EC can cause a few problems in a female, and usually will completely mess her cycle up. It's not a surprise that she missed hers. One of the side effects is irregular bleeding. It's not likely she would be pregnant, and there was no need for the pill she took--it's likely caused more harm than it did good. I personally would not worry about it.
In the future, make sure you're using condoms anytime you decide to have any sexual acts or abstain completely. Emergency Contraceptives should only be used in actual emergencies such as failed condom, rape, etc.
thanks for the reply.she has still not got her period tho.is it possible the bleeding 5 days after taking the pill was indeed a period?