When I've been going to either Pop or AoA, AKL (Jambo and Kidani) have been on the route, as well as CBR or CSR. Usually, Pop and AoA were the first, with AKL being last.
But there have been one or two times that AKL was first. It shouldn't take more than 90 mins even if AKL is the last stop. The timing should be fine. I assume your mom is actually staying at AKL? If she isn't, then it's going to be hard to get on that bus.