Hi Shawn,
I looked up a few places and can’t find any info. There is no stone listed on StonePics, however that just means there was no stone that could be read a few years ago when they were cataloged.
Are you sure she stayed in Newfoundland? Many times, older widows would move to the US with their grown children, either NY or Mass.
BTW, not sure if you know but sometimes “widowed” would be listed when the husband abandoned his wife and family.