I like to draw

Recruited mages as allies: Neri makes this decision early into her time as Herald and isn't running a big organization yet, so she makes this decision as mostly a gut-check. Fiona - a fellow elf - takes a chance and risks a visit to Val Royeaux to broker a mutual alliance, which seems careful and practical compared to her encounter with Seeker Lucius. The mage's aren't the side trying to justify killing an entire demographic of people, just survive. Neri's father was the First of Clan Lavellan, and it's given her a view of how magic can be handled outside of human circles, and nurtured as a valued role in a society. This all sums up to her siding with the mages without really giving the templars a second thought, for better or worse.

Left Loghain in the Fade: This felt like a fitting end for the disgraced once-commander of Fereldan. Also, the Inquisition pressured Varric to drag Hawke into this situation, and thus she feels somewhat more responsible for Hawke's survival than Loghain's,

Grey Wardens join the Inquisition: She's not really in a position to turn down allies, and she's wagering that the Warden's won't be manipulated by Corypheus successfully a second time before his defeat; from the information she has, it seemed this plot was a plan years in the making. Also, Neri loved to hear stories when growing up in Clan Lavellan, and her absolute hero of her childhood was Garahel - a part of her stills sees the Warden's as heroes who were mislead. Sentimentality rules her a lot more than she lets on.

Briala rules Orlais through Gaspard: Killing Celene was a decision that didn't settle easily on Neri, as it was the first time she had traded a life for political advantage and not necessity. It was also, however, a rare chance to make a difference for elves, and she knew of how Celene marched on Halamshiral - someone willing to cross that line once could be pushed to do it again. I like to think Neri and Briala collaborate a few times after she officially 'retires' as inquisitor - sometimes to check Gaspard's inevitable pushback - and she comes to see this as the right decision.

Inquisitor Drank from the Well of Sorrows: Neri respects Morrigan, and has a soft spot for kids. She was around Kieran's age when she lost her only parent. She sees how Morrigan taking the power - and consequences - of the Well could smash into Kieran's life as well. She sees it as a better choice for her to hold that risk than lay it at two people's feet, as she's already marked by strange magic anyway.

-other-

Lost Clan Levallen

Hardened Leliana Divine

Disbanded the Inquisition