The directors of HABIT, a Mayo Clinic program for people living with MCI and their partners, write this blog on Connect:
- Mild Cognitive Impairment (MCI) https://connect.mayoclinic.org/blog/living-with-mild-cognitive-impairment-mci/

Amongst other common topics, they have written about denial. It's not uncommon:
- Is it Denial or Something Else? https://connect.mayoclinic.org/blog/living-with-mild-cognitive-impairment-mci/newsfeed-post/is-it-denial-or-something-else/

I bet it was worrisome for you too when she got lost. Eventhough you had the app, you probably knew she would be scared and confused.