I hear היא עדיין without separation, like ידיין which I don't know if it is a word but it remind me of ידיים.
Me too that's what I heard and wrote because this is totally how it sounds.
I don't know, but my husband, who has a lot of harmonicas, says you can't tune one.
Edited to add: Perhaps that's why she's still (trying to) tune it. Somehow the sound got ruined while she was making it, and she's trying to fix it.