La Jolla Playhouse is running Lempicka. It's a Broadway-Bound musical about the iconic female nouveau artist. Not sure how family friendly, but it's probably worth a look at the La Jolla website.
Highly recommend, it’s a brilliant show. It is full of lesbians and drug use, so that may or may not rule it out of contention… but if they’re into Oklahoma! there probably mature enough for this.