This a part of the song "Donut hole" by hachi
何も知らないままでいるのが
あなたを傷つけてはしないか
I asked a japanese person and they told me it's similar to あなたを傷つけるのではないだろうか
. However I don't understand how it works grammatically. As far as I know the は particle cannot topicalize verbs in the TE FORM.