These are developmental abnormalities , as the facial development before birth in mothers womb occurs after fusion of many small parts , if there is any abnormality then things like this like the sinus
you have on the dorsum of nose develops.
If such abnormalities develop then for your daughter you must consult an ENT specialist
and get her examined in details , as there can be other associated abnormalities in abdomen too.
For you the treatment for the sinus is surgery.Or otherwise take care as if it gets infected then the infection can go straight in brain and can cause serious problem