Hi. My 4.5 month old Lily will not let me touch her with her brush or comb. The second she sees it she freaks out, starts shaking and runs for cover. I have tried letting her play with the brush, tried gently brushing her when she's sleeping...nothing works. In the meantime her fur is tangle free but it's getting longer and I want her to get used to it as soon as possible before there is any matting. Thanks for any and all advice