If you have done a worm count (maybe include fluke if it is a problem in your area) your vet will advise at to the type of wormer. I have used panacur (the only one that can be used during lactation at all) successfully, as your goats are probably quite young and will be goin gonto cean ground(?), it should be effective. For Panacur the goats dose is 1.7 x the sheep dose, measure your goats weight/girth, I had added a table with the data somewhere ealrier in the goat section. Panacur is cheap to buy from the feed merchant.
But only worm the goats if necessary!!!! (If her droppings are normal there are probbaby no worms in her either!!!).