Maw is feeling guilty about helping send Bow over the bridge. I guess your Moms have felt the same way? Maw is trying to get past this.
Bow was cremated the same day as his euthanasia, and Maw picked up a lovely wooden box the next day with "Bow" inscribed on it. And they gave her "The Bridge", and a lovely tribute to Bow's cremation. It was so quickly taken care of and very nicely done.
But she still feels guilty.