Denny’s was the spot my husband and I would pick whether on the road or not. He loved their breakfasts. We moved from CA to GA and I don’t believe we found a Denny’s anywhere on the highway (20?) until we were out or nearly out of TX. After we settled here the only Denny’s was in an area we didn’t WANT to go to so that was it for Denny’s..and the end of eating breakfasts out. He’s gone now but he did love their breakfasts..Grand Slam as I recall...
My sympathies for your loss. I don’t understand how you could not find a Dennys in TEXAS (my home state) because they are all over here.