Back in the 90s, DC had a concept for a comic series, toyline and animated show called Wonder Woman and the Star Riders. It centered around Diana, Dolphin (of Aquaman), Ice (from the Global Guardians and later Justice League International) and two original characters named Star Lily and Solara. The concept was basically a Western version of the magical girl genre. Unfortunately, neither the toys nor the animated series and the comic series only lasted one issue. Still, I think part of the concept has merit.
I wouldn't involve Dolphin and Ice as those two belong to other franchises but I think Star Lily and Solera can be used.
I'd use some elements of the original comic, having Solara and Star Lily in pursuit of the criminal Purrsia. This leads them to Boston, were Vanessa Kapatelis is recovering from her time as Silver Swan. When the jewel Purrsia has stolen ends up in Vanessa's posesion and bonds with her, Lily and Solara find themselves having to protect Vanessa and train her in use of her new abilities while protecting her from nefarious forces.