I've read quite a bit on this and objectively decided DRF gets a pass.
DRF was hired in spring 2017 and may have sat in on some of the joint use "negotiations" that occurred from June to December 2017 but it appears even if she was involved she never "got a seat at the main table" when it mattered and was not present when it was signed. When the meetings started UNLV's key representatives were:
Sam Boyd Stadium executive director Mike Newcomb (who actually benefits most from the continued use of Boyd Stadium)
UNLV President Len Jessup
UNLV Vice President Gerry Bomotti, who resigned in July 2017 (Bomotti’s resignation may have been related to presidential debate spending in 2016)
The highly dysfunctional Nevada Board Of Regents tried to play puppetmaster and control the priorities for the negotiations, and had their new NSHE Chancellor Thom Reilly (arrived that summer) oversee UNLV’s negotiating team. The Raiders' tactic was to make the "negotiations" be almost entirely about parking, and that is what the BOR and the $750/hour law firm that UNLV had hired were focusing on, particularly these three things (https://www.unlvfreepress.com/nshe-chancellor-wants-unlv-come-first-raiders-negotiations/):
Parking on game days will have zero impact on students’ parking.
UNLV should retain revenue from all use of its parking facilities.
Neither UNLV nor NSHE will be bound to long-term parking conditions without a way out.
The focus on parking may have been genius by the Raiders - if they knew at the time that they could find other parking than UNLV - or just luck. UNLV's top priority was to not affect student parking on game days (usually Sunday)?
Senate Bill 1, approved in October 2016 that allotted $750 million in public funding toward the stadium, was the problem for UNLV. That bill left UNLV with almost no negotiating leverage other than being able to delay the groundbreaking by stalling the approval of the Stadium Joint Use Agreement.
That period (Fall 2016 to Spring 2018) was particularly bizarre due to lots of players with lots of agendas, for example:
Apr 3rd 2018 https://thenevadaindependent.com/article/unlv-president-len-jessup-leaving-university-blames-departure-on-personal-and-professional-attacks-by-regents Jessup resigned and wrote a letter: Jessup said the “personal and professional” attacks levied against him by system Chancellor Thom Reilly and members of the Board of Regents led to his departure.
January 29th, 2017 Sheldon Adelson, who had promised to spend $650M of his own money to help construct the stadium, pulled out only three months after the state passed Senate Bill 1 allocating $500M of public funds to the project. It had never really been a secret that Adelson's only interest was to divert public funding away from expansion plans for the Convention Center (which competes with his Sands Expo). Adelson had stated previously that he had no interest in football, but his son watched it "occasionally".
July 2017: UNLV introduced the odd new logo, which an "outside entrepreneur" paid about $50K for a Denver graphics firm to design. The logo lasted until December 2018 and was never used by the athletics department. It has never been revealed who had the logo created and forced in, but the arrival of "PC Reb" aka "Neighborhood Watch Reb" followed ten weeks after the arrival of former Senate Majority Leader Harry Reid at UNLV's Boyd Law School. Reid had previously tried to get rid of UNLV's mascot and logo after it was used to criticize him after he started a PC range war against the Washington Redskins.