"I can always tell where she is on the floor," Taylor Mulhern said. "I don't have to see her. I just know."
Their basketball careers have stretched from AAU to the All-Star League to places such as ABC Field, Triangle Park, and the local swim club, where they played against boys.
They would just go to the courts to have some fun, both said.
The first half against the Royals was anything but fun for Ridley (15-5 overall, 10-3 league), as both teams struggled from the field. Each side was so ice-cold that at halftime, the Royals (7-13, 3-11) led by only 9-7.
"When it comes down to a hard game and we need someone to take control of the game - ballhandling - we go to Taylor," said Bree Mulhern, who finished with a game-high 20 points.
"She can slow it down or go fast when we need to, and no one else can do that."
Ridley came out with a new energy in the second half, as evident by the on-court actions of the Mulhern twins.
Throughout the final 16 minutes of play, the 17-year-old guards were jumping up and down, high-fiving one another and giving each other, as well as their teammates, encouraging pats on the back.
It just means "let's go," Bree Mulhern explained of the enthusiasm displayed, before looking to Taylor for confirmation.
Taylor Mulhern nodded in agreement.
Bree continued: "We just want everybody to dig deep."
Upper Darby 4 5 5 13 - 27
Ridley 3 4 15 15 - 37
UD: Dom Williams 19, Olivia Townsend 4, Fatima Sherif 2, Cierra Bronson 2.
R: Bree Mulhern 20, Mary Kate Rumbaugh 10, Taylor Mulhern 3, Isabella Hamlin 2, Jalessa Rodriguez 2.