How is the mouth of a girl child, whose tongue was licked by a dog, purified with earth, and does ritual impurity transfer from her to the mouth of the one who kisses her?

If a dog's saliva is on a girl's tongue, the tongue must be washed seven times, one of them with earth or its substitute. If the girl then kisses her father while the wetness and saliva of the dog are still on her tongue, the kissed area must be washed seven times, one of them with earth or its substitute. However, if she kisses after the physical impurity has been removed, there is no harm and no washing is required, because the remaining trace of impurity is a conceptual matter that does not transfer. It is important to note the prohibition of keeping a dog unless there is a legitimate Sharia necessity.