What can I use to calm my cat so that I can groom her?

Dr.'s Foster & Smith has a cat collar that has a calming med in it. They also have other clamming med.'s for cats.You could then get someone to help you cut the matts out. If all else fails get her shaved nd start over once the hair grows back.

Not only large, she is likely very strong. I have several long hair cats, and they sometimes get mats. What I use is in the link I have provided. You can poke through a mat, and the protected blade makes it impossible to cut your cat. It is inexpensive, and fast. My cats don't get mats tight to their skin, so I am able to use the device to slice the mat in several strokes. My one cat doesn't like to be handled, so I grab onto the matted fur, and slice so quick that she usually doesn't fight me.

If she has a lot of mats, you will probably have to slice them off before trying to get her to accept combing. So you do a few at a time, or corner her where you can do a lot at once. What you also want is a brush that has prongs on one side. You use the prongs to get off undercoat, and the brush to remove surface fur.

Once you get the mats under control, and follow up with using the prongs, it should become much more manageable, and she may cooperate. Cats seem to have a sense when you are tying to help, and mats have to be uncomfortable.

I agree with Mable. Have her shaved then maybe it will be easier to keep up with her grooming when her fur comes back in.I think the wet food will be good for her fur.

Have someone help you hold her while you groom her. My mom does this when she grooms her persian