's mom is striking back at the Olympic gold medalist who trolled Bella for her new deal as a Nike brand ambassador.
Figure skater Meryl Davis basically slammed Bella for working with the athletic giant -- posting a pic of Bella with the swoosh, Kylie Jenner in Puma gear and gymnast Aly Raisman ... with the caption, "I'll take the one promoted by the athlete please."
Mama bear ain't happy. Yolanda Hadid tells TMZ, Bella had Olympic dreams and competed in equestrian riding every weekend from age 3 until 15, when Bella got Lyme disease.