Complex sentence: Abby becomes friends with Raven Reyes when she needs her mechanical expertise to try to get more information on what the 100 is dealing with on the ground, and begins to like the young engineer due to her reminding Abby of Clarke.
Split into simpler sentences: Abby becomes friends with Raven Reyes when she needs her mechanical expertise to try to get more information on what the 100 is dealing with on the ground. She begins to like the young engineer due to her reminding Abby of Clarke.