Praise be to Allah, the Lord of the Worlds; and may His blessings and peace be upon our Prophet Muhammad and upon all his Family and Companions.
There is no harm for a small girl to get married before she has a menstruation.
The evidence is the verse mentioned, as it sets a waiting period for a girl who does not yet have a period (menstruation). Of course, the waiting period does not apply except after a divorce.
However, if a small girl gets married, her husband should not have sexual intercourse with her unless she is physically fit for it.
Allah knows best.