Inexplicable. A year or less since the last big election moving to inactive doesn't make sense. She's lying or a mistake has been made. I'll go with the highly likely she's lying.
I thought so as well.
Know we have journalists here who can research it further.
But this article indicates it’s POSSIBLE she voted last year and is still ‘inactive’ on the website.
http://www.al.com/news/index.ssf/2017/08/are_you_registered_to_vote_ala.html