If there are women in the 75th Ranger Regiment (as far as I know, there aren't, but there could be some at the Regimental level), they'd be required to be jump qualified, but wouldn't go through RIP. The Ranger battalions, like any other infantry battalions, isn't composed exclusive of infantry - there are also cooks, motor transport operators, etc. assigned to those battalions.
Yes, women assigned to the US Army's 75th Infantry Ranger Regiment are required to attend the Airborne Course and Ranger Indoctrination Program (RIP). These courses are essential for all soldiers in the regiment, regardless of gender. It ensures that they are qualified and prepared to perform the duties and tasks expected of them in the 75th Ranger Regiment.