All perfect praise be to Allah the Lord of the Worlds. May His peace and blessings be upon Prophet Mohammad and upon all his family and companions.
It isn`t permissible to abort a fetus except when it jeopardizes the mother`s life and in case of special medical condition. Based on the above question, medically speaking, the mother`s life isn`t in danger. Therefore, it isn`t permissible to abort this fetus and We (Iftaa` Department) advise the asker to register her marriage in Islamic court after getting the approval of her guardian to preserve her rights and those of her fetus's. And Allah The Almighty Knows Best.