Usage of かしら as a standalone phrase


In the anime 少女革命ウテナ (Revolutionary Girl Utena) one of the shadow girls often
says

> かしら、かしら。ご存知かしら？

which is translated in the subtitles as "I wonder, I wonder. Do you know what
I wonder?".

I'm familiar with adding かしら after the predicate but I've not come across it
as a standalone word before. Is this usage standard? If someone asks me, for
example, "do you think my cunning plan will work?", and I'm not sure of the
answer, can I just respond with かしら? It feels unlikely to me.

Unrelated, but I also have no idea how ご存知 works in this phrase.




These かしら are meaningless except that they add some rhythm. This pattern is
known as [三三七拍子](http://www.worldfolksong.com/calendar/japan/san-san-
nana.html). Note that those shadow girls talk fairly theatrically, playing the
role similar to western clowns
([video](https://www.nicovideo.jp/watch/sm14748099)), so they don't have to
speak normally. In English, maybe something like "sing- _a-ling-a-ling_ " or
"see you later _alligator_ " is somewhat close to this.

ご存じかしら literally means "(I wonder,) Do you know?", not "Do you know what I
wonder?" But when translating a catchphrase like this, rhythm is more
important than the semantic fidelity, so I don't think the translator made a
mistake.




These かしら are meaningless except that they add some rhythm. This pattern is
known as [三三七拍子](http://www.worldfolksong.com/calendar/japan/san-san-
nana.html). Note that those shadow girls talk fairly theatrically, playing the
role similar to western clowns
([video](https://www.nicovideo.jp/watch/sm14748099)), so they don't have to
speak normally. In English, maybe something like "sing- _a-ling-a-ling_ " or
"see you later _alligator_ " is somewhat close to this.

ご存じかしら literally means "(I wonder,) Do you know?", not "Do you know what I
wonder?" But when translating a catchphrase like this, rhythm is more
important than the semantic fidelity, so I don't think the translator made a
mistake.

