If you want to talk instead, I would have her take the letters and read them later so you can talk for the whole hour. The letters are about the "past" and you'll want to "have" her to talk to the whole hour?

The letters won't go anywhere, can be read anytime. I'd skip the letters this time or ask her to read 1 or 2 of the ones from the end so she can "catch up" and then talk.

I know! Why not write her a letter now of what you want her to know from the two weeks and she can read that one and then you can continue?