Well at least the pill is getting them out. They sound like pinworms. You get millions of them. She will have to treat for a long time to get rid of them. She should put vicks on her anus to catch them and any eggs. Shower the are with lots of soap and water and rinse really well. a shower head works good. dont take baths cause the eggs will stick to your skin and get in your ears and eyes. clean toilets and bathroom wioth steam mop and alcohol. sprinkle borax on rugs and let sit then vaccum. change sheets each day. wear tight fitting underwear and pants to bed.