I was an on and off reader of theirs and really liked it in the beginning… but had the distinct impression they changed ownership a little while back when they added some pay walls and game guides.
Donut County (Not adventure, but a very simple and accessible puzzle that spans an entire town)
I haven’t played Stray, but it may be a good fit. I also haven’t played past the opening scene of Firewatch, but if your daughter can manage walking around Skyrim then I think it should be okay.
I searched for indie exploration games. City of Muse came up.