I have never really gotten along well with her.
Quite honestly, when starting back again, which I end up doing so much (!), I just either use the treadmill and a lot of power walking, or I use Cathe's easier and earlier stuff to ease back into higher impact work. Her Step Heat workout is good for this, as is Step Fit, and Rhythmic Step in sections. You can also use just the step sections of Low Max, without the blasts.
For weight training I use Cathe but with lower weights that I was using when I took the break from exercise. And yes, the first workout is crappy and the muscles scream for 3 days afterwards, but I know this going in, plan for it, suffer it and then know that that stage is done and now I can move onwards and upwards!
If you find the bits of Cathe's workouts that you can still use, you can save yourself some money on buying new Beginner/Intermediate workouts that you may never use very much.
Clare