Flower of Seshana by SJ Sanders

Alexandra Harrow signed on with Darvel Exploratory Corporation for one reason, and one reason only—for the opportunity to study native plants on alien worlds. She had not expected to spend her days stuck within the colony labs on M285 with no opportunities to catalog or study the diverse flora of the planet outside of specimens directly brought to her to determine their potential value to the corporation. If she wanted to study anything it meant slipping off on her own with basic, borrowed equipment. It had seemed like such a simple little adventure until the alien who fell on her whisked her away to a shrouded mountain with promises to show her plants like she had never seen. But life among the Vahel is more than flowers and moonlight. It promises a love like no other with two males who wish to lay claim to her heart and hold it forever.

This is a 31k novella in the same world as Serpents of the Abyss and Serpents of the Night (but preceeding them)