Alien on the Moon by Celia Kyle

This scientist didn’t believe in destiny. But the stars disagreed.

When Elena packed up her Earth life to join her sister on the alien planet Thryal, she expected some culture shock. But these aliens treated her like she still believed in flat planets and magic potions!
When a crisis hits Thryal’s moon colony, suddenly her “primitive” Earth perspective doesn’t seem so worthless. Now she’s stuck on a failing agricultural station with Rylan, the frustratingly brilliant—and gorgeous—alien lead scientist who actually listens to her ideas.
She thought she came to Thryal to be closer to her sister. Turns out, the universe had a different hypothesis about where she belonged!
But when their success draws them back to the capital, can their budding relationship survive the spotlight of Thryal’s scientific elite?
Or will Elena’s fears send this experiment in love crashing back to Earth?