Tommo i suggested something similar,but he was worried he'd lose some of the stamina,so think hes thinking of a saluki,greyx whippet or something along those lines.
As for her strike its good,The main thing shes missing is speed,If she went a stride faster she would still not be fast.So all you could do is find a good dog and hope for the best.Just the same as you might lose stamina,Constitution,etc.
Thats why i put it up here you here about all these faultless dogs being breed from,I have never seen a dog without a fault some where.
Doubt he`s in any hurry any way,The bitch will carry on w