Etta- A voluptous beautiful fashionista, social media influencer, and heir to the Candy family fortune, (think a cross between Lizzo and Etta from LoWW) she is introduced to Diana following her initial fight with Ares. With no one to turn to Steve sends Diana to stay with his army buddy Marcus "Mint" Candys family. Steve grew up with the Candys who lived close by to Trevor Ranch (outside Houston) and knows Etta will be the perfect person to help Diana acclimate to US modern culture. Etta is Dianas first girl friend in mans world and she convinces Diana to join the Holiday Girls sorority and attend Holiday College. Etta eventually also becomes Dianas closest confidant and bankrolls a lot of Dianas expenses early on. Holiday College is where Diana meets Barbara Minerva, rival Veronica Cale, and professors Dr. Edgar Cizko and Dr. Isabel Maru (who also works for Cale Industries). The holiday girls serve their original function as back up for Wonder Woman. They are all trained and named honorary amazons by the princess herself.
Donna- Donna is a work in progress in my mind but I see her as a combination of all of her origins. She is the Diana of earth-x. Hippolyte Troy lead the Nazi team of occult artifacts collections. In her hunt she found a figure of an ancient Goddess, Rhea. When she touched it the figure began to speak to her and told her that she was chosen to lead a nation that would attempt to reclaim the earth for the forces of good. The figure told her where to find objects of power and with time Hippolyte leads an army and reclaims the US and becomes president. as a reward Hippolyte (who could not have children) was given a baby destined to become a great hero and blessed with powers by Rhea herself. Donna has a normal life for the child of a politician until the US is attacked by Dark Angel and Helena dies fighting. Donna (who is 11) goes to a "magic mirror" her mother used to talk to. She begs for help, the white house is on fire and everyone is dead. With a flash of light a figure emerges from the mirror, as her eyes adjust she sees a warrior woman, dressed in all purple who looks just like her mother. The woman proclaims she is Hippolyta, queen of the amazons and that she is here to save her. They grab as much of Donnas belongings(some mystical artifacts come along including a glowing rope) as possible and return to Themyscira. Donna is hailed as the newest princess in Dianas absence but longs for the normal life she left behind. Eventually Diana will return to Themyscira only to find a new princess who she will bring back to the US and name Wonder Girl. As much as Donna becomes to love her new life and friends she still longs to return to her earth to confront dark angel and end her reign of terror.
Kapetelis/Sandsmark family- The Kapetelis family would get a complete revamp. Julia is the dean of Anthropology at Holiday college and is the granddaughter of silver haired Amazon Pythia who left Themyscira to find a life in the outside world . She has two daughters, Helena and Vanessa. Helena is a widow (she believes her husband is dead but secretly he is Hercules maybe) and she is the curator at the Gateway City Historical Museum. Her daughter is Cassie who will be wonder girl #2 and neice to Diana. Dianas relationship with niece Cassie becomes the driving force behind her jealousy and transformation into silver swan.
I feel weird sharing all of these ideas as I've had them for a long time. lol.