Thank you everyone for your responses. I knew I had to ask the experts first before steering anyone wrong due to my lack of knowledge.
Betty, I agree completely. I didn't want to make her feel stupid and I'm usually really good at PR but just couldn't form the words in my head so they didn't sound bad. And saying, "new one on me" will have certainly been my course of action if she insists because I truly would want to know.
Framerguy -- thanks for your encouragement. My apprehension about posting comes from being blasted a few times in the past after posting a query. I try not to wear my feelings on my sleeve but it did make me a bit more, shall we say, cautious.
Now for the rest of the story -- She had gone to a local woodworker to have her frames made. Woodworker and I are old friends. As we were visiting yesterday he said she was in to have frames made and told him not to put glass in them because she had to have special acid-free glass. He told me, "So I assume she'll be calling on you for the glass." I said, "Oh, don't think there is such a thing as acid-free glass."
She had contacted me about framing these pieces a long time ago (this could go on warped "What if.")
They are pencil drawings.
He says, "The only problem I have is there is no margin of paper outside the drawing for the lip of the frame." I said, "So she's not matting them. Just smack up against the glass." He said, "No mat. That's not good is it." I said, "Not really."
I told him to try to encourage her to have them matted which would give him more room to work with.
So that's what brought me to the Grumble -- to be armed and ready with the correct information -- IF she does show up.