Ginny- It looks like a nice itinerary, a bit different than ours.
We went to Sitka instead of Skagway. I’m not sure which is the least exciting of the two. And your mother will go to Nanaimo, BC instead of our Victoria. We would have liked that since we have been to Victoria.
Tell her Juneau is a nice town in a great setting. The town of Ketchikan is charming, if she can explore it & see the back shops along the canal. None of the towns are very large.
I wish her a wonderful trip, clear weather & a gentle voyage.