You are very welcome.
I have had long haired cats in the past and I know the challenges you face. Dogs are much easier to groom than cats.
Never cut a mat because you can really risk cutting the skin.
I think those special combs I was telling you about are called pets rakes. Taking out one a day is how I used to do it. Good luck Let us know how you make out.

Did you use two people or just one to comb the cat? The cat wont keep still, it is underneath where the matts are, she thinks it is play time when she gets rolled over.... grrr

That all depended where the mats were. I n some cases I could do it myself, but other times it did take two of us. Its a tough job sometimes.
With the comb I always found it easier to let it grow out a bit so it wasn,t too close to the skin. you can break it apart with the teeth of the comb too, which isn,t too hard to do then the mat comes out easier..

Jackson Galaxy would say she's not getting enough exercise and that ou should set up a regular playtime for her. Then, the ideas about doing grooming a little bit at a time when she's sleepy would be more effective. Also make sure to groom gently using a comb or brush with short teeth, so that you don't really pull on the hair. If she has real knots, work on them from one side of the knot, just a few strands at a time. Try to get the knot away from the skin so you can hold the bottom of it with your other hand. This will keep her from feeling the pull of the comb. (This is pretty much what Betty said, I see.)

But first, play with her for 10 minutes to tire her out. And don't do too much at one time. And remember, if you do have to cut some, it will grow back.

Tiring her out is a really great idea, thank you