I am further south in Fredericksburg, but I have had good experience with Firestone; they do have one in Alexandria. Also, and I am sure they are not the only ones, if you buy the tires there, they come with free lifetime rotation. I am sure you could find a proper set online and then just advise her what to get once there. Also, a set I currently have on the truck, they replaced 2 tires for free after the original ones I got there had some hairline cracks after 15k miles for some reason. No hassle, no questions asked. So all in all, I cannot say anything bad about those guys.