Dettling announced her decision during a signing ceremony in the RHS large gym Friday afternoon.
"I decided on Montana-State Billings because I loved the environment. I loved my experience there," Dettling said, alluding to her campus visit in mid-September. "I loved how the campus was super close together. You didn't have to walk very far. I loved how the softball field is right next to the dorms. I liked the people and how Montana is a different place than Reno. It's really pretty there."
Dettling has earned first-team High Desert League pitching honors for both her sophomore and junior seasons. She's helped Reed to state tournament appearances during both standout seasons.
"This spring will be her fourth year on varsity," Reed coach Jon Wunder said. "I think I'm more excited to see her compete as an individual. She's always been overshadowed by her older sister. Now she's looking forward to being a team leader and going out there to be Megan Dettling and not Mary's little sister."
Mary Dettling is playing softball and attending St. Martin's University in Washington state. She was a two-time HDL offensive player of the year.
Wunder said it's no surprise to see the younger Dettling following in her sister's footsteps by taking her talents to the collegiate level.
"I'm excited to see her be able to move on and play at the next level," Wunder said. "Her commitment and hard work has got her there."
Dettling said she plans to study Communications and added she hopes to pursue a career in broadcast journalism. The chance to go to college and compete at the same time has been an emotional realization for the 17-year-old.
"I was crying when I found out I was going to verbal," Dettling said. "I said the words out loud and it was like, 'oh my god, I finally did it."