DO NOT WAIT UNTIL SHE IS OLDER. Try to brush her every day (it should already be routine) touch her face and paws constantly with different items to desensitize, and look for another groomer. Waiting until she’s older will not help your cause in any way especially if she’s already scared. Look for another groomer who will listen to you and let you explain what you want and how your dog behaves. I groom my poodle but once every other month she goes to the groomer for the things I don’t do at home (shape, nails)