I have been growing Maggie's hair out for some time now BUT the only thing is if I let a day go by it's all matted up

I had a sweater on her for the last day and I just took it off to find MAJOR matts

Soooo I have to take her to the groomers first thing in the morning...there's noway I can get these out.
My question is...what are some cute med. length cuts??? I don't want to go too short with winter coming but something that won't matt up too bad on me.