Victim of a Mothers Day Assault

On May 9th, 2020 my 55 year old mother and sister (32)  got robbed around noon. They were on the corner of Imperial Hwy & Vermont Avenue selling Mother's Day gifts and flowers to complete the rent money due to the recent layoffs due to Covid-19. A car pulled up proceeding like they were interested in purchasing an item. That is when two or more females hopped out the car grabbed my sisters fanny pack in attempt to steal her money ,and then started punching her face knocking out one of her front incisors (front tooth) out as she tried to defend herself. they tried to pull her inside their car and my mom ran to help my sister and the third female exit the car and punched my mom several times dropping her on the ground and then stomping on her head and kicking her. They took all their money and some merchandise. Any help would be  gladly appreciated.