What mental stimulation do you do with her? Training? Enrichment toys such as Kongs and other out food dispenser toys?
Scentwork -, hide a treat or a toy and encourage her to Find It -, a very versatile game which can be played just about anywhere. Start off with one room and work your way up so that you're playing it on walks, too. As she learns with treats, switch up to things like key, socks, gloves, the paper - etc.
"It's Yer Choice" by Susan Garratt
Sit in front of your dog with a handful of treats. When the dog leans in to grab them, close your fist. The dog will likely nudge and paw at your fist to get the treats, but eventually she should lean back - that's what you're waiting for. Open your fist. If she leans in again, close it. When she leans back, open the first and give her a treat.

Why “Choice” is the Critical Key to a Great Dog | Susan Garrett's Dog Training Blog
The ItsYerChoice Game is the key building block to everything I teach in dog training. With ItsYerChoice, doing what YOU want, is going to be your dog's idea!

A similar game is one I'm currently teaching my dogs: The Bucket Game by Chirag Patel. This one puts the dog in charge.
Place treats in a bucket big enough for the dog. (I'm actually using a mug, but the premise is the same). Put the bucket to one side. When the dog looks at the bucket, feed a treat from it. Let the dog look away, walk away, take a break/get a drink, or end the game by lying on her bed or leaving the room. As you will see from this link, you can then use this game to move on to other areas, such as the ear check/clean as demonstrated:

The Bucket Game
The Bucket Game – The Game of Choice This fun and easy animal training game is designed to empower the learners. By creating an environment where our animals have choice and can communicate their...
www.allpetseducationandtraining.com.au
A stuffed Kong will give you both a bit of time out.
Look up Kikopup on YouTube. Especially her Capturing Calmness video.
Hope that helps.