UR does meet 100% of demonstrated financial need for international students who are admitted, but it is need aware for international students. More info here: https://admissions.richmond.edu/process/international/index.html
They report an admit rate of 10% for international students who need financial aid, so definitely a reach for you, but your overall stats are strong.
UR does require the CSS profile for financial aid. It requires info from both parents, even if divorced or separated. You state you have no father. If he is living, you are still supposed to provide his info. If he is deceased, you my need to provide additional documentation. You should contact financial aid at UR to find out what is needed.