[gemy]

Welcome to YT. I think that in this case it would be best to go to obedience classes, hire a trainer.
There are a number of ways you can do this. Look up in the area dog clubs, often times their name will tell you if they do obedience, for eg; Cleveland Dog Obedience club. Petsmart will sometimes put on obedience classes.

An older dog can still be trained, it is almost never too late!.

Rule out for your pup medical issues, by discussing with your vet her behaviours and see what your vet suggests. Your vet may also know of a good dog trainer in your area as well.

There is a saying that is very true; A tired dog is a good dog! So maybe see if you can exercise her in the evening before bedtime. Try a walk but also some toy play.

See if you can have a dog walker come in to walk her mid day if your schedule doesnèt permit that.

For the barking there are many threads on here on how to train a dog to limit their barking.

It does take time and patience, but it is very rewarding when you see or hear progress.