Good-bye Herbst device hello lower lingual arch bar

Kendall spent 13 months in her Herbst device plus the time before that with the expander. The orthodontist is concerned with the way her teeth are coming in so she wants to place the lower lingual arch space holder. Essentially it just holds the space in her mouth for the other teeth to come through. Whew! When did my baby get old enough to need orthodontics ??