
the only thing to do is keep her away from any male dogs, that means do not walk her where dogs are off lead. Watch her in your won garden,a nd keep her on lead for at least 3 weeks, but more like 4, and do not take her out at all if you cannot be sure not to meet dogs.
Not spray or tablet (chlorophyll, made by sherleys Johnsons etc)will really be very effective, other than toning down the scent for when your road walking her, and see another dog before you cross the road.