Hey all! This is my first posted story for Sanvers. I have a few others written, but I feel I should get an idea of if anyone would even be interested in them. This chapter introduces my original character for this story who will tie multiple one-shots together.

Misunderstandings, jealousy, and protectiveness abound.

Night patrol is one of Kara's favorite shifts. The cool night air breezes through her hair, the comfort of the stars shines above her with the soft bustle of the city below.

She can focus her help directly on the citizens during these shifts; Bringing food and blankets to the homeless, stopping muggings in alleyways, the smiles she creates here are her favorite.

Tonight starts just as any other, she flies just high enough to increase her hearing range as far as possible and listens in for any sounds of distress or chilled sickness.

As she flies, she let her mind wander, not far but enough to keep a smile on her face throughout the travels.

A voice brings her from these musings. Maggie's voice.

But she's not alone. Zeroing in on her sister's girlfriend's voice hoping danger had left her alone for the night, she hears…flirting; However, the voice accompanying Maggie -the way-to-sweet giggling voice- is not that of her sister.

Fire in her eyes and anger in her heart she flies as fast as she can to Alex's apartment. Landing in the alleyway beside the building, a quick change sends her rushing from the shadows and up the many flights of stairs separating her and her sister.

Separating her sister and the truth.

Separating her sister and heartbreak.

Oh, Rao! How was she supposed to do this?

Quick and sharp knocks stir Alex from her light sleep. She ventures to the door with a groan, one hand pulling Maggie's worn out NCPD workout shirt in place, while the other holds her gun in a tight embrace.

Pulling the door open, she is met with her wide-eyed sister. Hair tangled from the wind and cheeks reddened from the chill.

"What's up, Kara?" Alex asks, ushering her sister in before moving to the kitchen to make them some warm tea. If she had any hope of getting back to sleep after this ungodly hour, she would need the warm and calming liquid. Kara would need the same if her fidgeting was any indication.

"There's – There's something, or, rather, I heard something."

"Is everything okay?" Alex questions, settling her worn kettle on the stove

"No. Well, yes, yes, I'm fine." Kara reassures, seeing the worry churn in her sister's eyes, "It's just-"

Alex watches her with concern, the fidgeting and stuttering pull at her nerves. To occupy her hands while she waits for Kara's announcement, Alex begins pulling down a few mugs and spoons to prepare the soon to boil tea.

A key in the lock startles Kara out of her trance. Alex watches as her eyes instantly turn cold, footsteps pattering in.

The squeak of the coat closet shatters the near silence, a few moments of fabric fumbling and Maggie is making her way toward the lit kitchen.

"I didn't know you'd be up." Maggie says with a smile, leaning up to place a quick kiss to Alex's lips.

"Kara's having some difficulties." Alex says, motioning to the steel-eyed woman.

"Why are you here?" Kara spits out, eyes locked on Maggie

The couple steps back, exchanging a confused look at her hostility.

"Uh, I live here? Are you okay Kara? Did something happen on the night watch?" Maggie asks, grabbing another mug from the cabinet as she sees Alex move into a confused, defensive posture

"You can't just come back here after you were- after you were there with her!" Kara shouts

"With who?" Alex and Maggie ask at the same time

"That girl with the voice and the 'Oh Maggie you're so cute.'"

Maggie's tilts her head heavenward as Alex's "What?" echoes in the room

"It's not-"

"Oh wow you're so strong, you must bench a lot." Kara responds in a high-pitched tone moving closer to her sister's side

Alex's eyebrows raise.

"Undercover. Alex knows that." Maggie states calmly, reaching to pull the whistling kettle off the stove and pouring their glasses

"And the offer to go home was what? Home surveillance or whatever you guys are calling it these days?"

"Uh."

It's at this point that Maggie shifts uncomfortably. Alex's eyes shoot toward her.

"Rose."

The name settles over the room.

In an instant Alex is moving. Her jacket flung over her arm, she all but storm to the door. Kara nearly tripping in an effort to shake off her shock enough to clear the way.

"Alex! Alex!" Maggie calls, making it to Alex's side with a calming arm on her shoulder.

Kara's "Don't touch my sister!" is lost in their glance.

"We needed a civilian. Someone who didn't seem like a cop, walk like a cop, you know the type. It was the safest way to get information for our case."

Alex's green-eyed monster could be seen through her eyes.

"It didn't have to be Rose. You know what she's like."

"Trust me, I tried. The chief wouldn't hear of it, didn't want any more civilians knowing too much about the division. Something about making the aliens look more like enemies than most already believe."

Alex allows herself to be pulled back to her sister's side, and settles onto the bar stool beside the blonde. Maggie finishes pouring the drinks and slides them across the island to the sisters. Leaning against it on the opposite side, she reaches out and links her hand with Alex's in an effort to calm her irritation.

"What's going on?" Kara asks, steel remaining in her eyes, "Do I still need to fling her at the sun?"

Alex laughs at Kara's threat and less than discreet nod in Maggie's direction.

"Not Maggie, unless you want to fling me, too. Though, I do know someone you coul-"

Maggie's glare stops her in her tracks.

Moments pass, their cups nearly empty when Kara speaks again.

"So, who's Rose?"

The heavy groan that follows her question assures her that the answer will be anything but short.