We then needed to call the ambulance.
Why did you need to call the ambulance?
She couldn't get herself up.
It can be costly but it is good to call an ambulance. Otherwise you could cause serious damage to a person or they might die before you can get them to the hospital.
She was not in the position to call for help herself.
You guys did the right thing by calling an ambulance. You should be proud of yourself for helping that woman.