As she grows older, she may develop both an outer coat and under coat. The under coat will be what can get matted. The comb with the rotating teeth is wonderful, but you will want to get one with the teeth spaced maybe a bit wider apart as she matures. Same with a regular comb (where the teeth don't rotate.). A dematting tool is also handy to have on hand.

Sometimes you can get some combs at the dollar store. Good way to try out different ones until you see what works best.

I would be a bit concerned that you may be bathing her too much. How about just giving her a *foot bath* when those feet get dirty. I use a plastic dish pan and take one foot at a time and swish it around it water with just a tad of soap in it. Also as she matures be careful that she doesn't have any mats in the undercoat before you bath her. Those mats can tighten up and pull on the skin. It is hard to predict just what type of a coat she will have even with being long haired. You will just have to wait and see and try different techniques. Do get her used to being groomed now while she is a puppy and be gentle so she doesn't dread it.