aj, about the exercise, it might not be ideal but if you have an open stretch of space inside your house, maybe she would like playing ball. I know that might sound a little silly, space-wise, for a big dog because there would not be enough room to get up any speed, but sometimes it is simply about playing and having fun and bonding and interaction with people.
I know a dog that is about the size of a lab. He is obsessed with playing ball. He lives in a relatively small house......but that house does have a staircase. He will play ball as long as anyone is willing. He goes to the top of the stairs (at the landing part) and catches most of the pitches. He then drops the ball back down the steps to the person who is playing with him. (He tries to talk anyone who comes to the house into playing ball, including the plumber.) This dog gets to go for walks, too, but his ball-playing career is very important to him. It seems to be about concentration and/or entertainment. When he used to have a bigger yard, he could play ball there. In fact, when he would run the ball back, he always had to touch his nose to a certain tree on the way. That tree seemed to be some kind of base. But now he has adapted to more of an inside life with walks and staircase ballgames to look forward to.
Of course nobody has a staircase in TV, but as I sit here looking at our Villages house, I am thinking where I could play ball with a big dog......maybe from the front door to the back of the lanai but........might get a little dicey for you...... if the dog is really big.........or if you collect and display Waterford......
Oh well, just a thought. Keep us posted.
