Unless we learn more about her contact/glasses habits from her family/boyfriend, just from my own experience, I think the possibility that she had an extra pair and may have been wearing them shouldn’t be discounted. IMOO
What if she decided she’d taken care of the dogs for the evening and would take the shirt she was to wear in the morning and walk to her moms for dinner and to just stay at her moms house so the ride to work wouldn’t be an issue in the morning? And something happened on the walk? Or she decided to walk over to her moms house in the morning to just borrow the car, but never made it?
Could it be possible that she dropped/broke her phone and decided to walk to her moms since she could no longer reach her brother about a ride? Maybe someone offered to let her use a phone or give her a ride on the way?
Idk if phone records would be able to tell if the phone was off due to it breaking or not.
My current feeling is that she walked out of her boyfriends house willingly, but never intended to disappear.
Really hope I’m wrong.
All IMOO