I wanted to add that she did text me when they were leaving. About an hour later, 6:35 to be exact, I got another text saying "Were on the road". I recall feeling a bit uneasy after that. Why would I need reassurance unless......?
I didn't know that they had been buying wine at the local liquor store followed by another excursion to the food store to shop for pretzels. When she texted 'we're on the road', they hadn't even started out because they were still only a few blocks away from their own house!! 
So just to bring you up to date:
Earlier today, we exchanged a few texts about the "InstaPot" I recommended which she ordered on Amazon and received this afternoon....She was really happy with it...so yes, our friendship remains the same and all is forgiven. To be fair, she's a bit absent minded and I was over tired. I also suspect she may have a touch of ADD or something akin to that...but nobody's perfect I guess, so we take the good with the bad, and call it a day.
Having said that, I wanted to thank all of you for your thoughtful replies, your commiseration and your patience. What I needed the most was a virtual hug and I feel I got much more .........so, thank you all once again!