A lot of hate for Tina Napier in this thread (and officiating in general), so I did some digging through old box scores back through the 2014-15 season.
Turns out Napier is far from the worst official we face when it comes to foul disparity (+4.4), and the games she calls are just a touch over our average foul disparity since joining the Big Ten (+3.6).
What was amazing, though, was how big the disparity is when we play Iowa:
1/23/19: RU 26, IA 12 (+14) - away; Napier, Roberts, Kantner
2/21/18: RU 27, IA 12 (+15) - home; Hall, Brooks, Trammell
2/02/17: RU 21, IA 6 (+15) - away; Bryan Enterline, Barb Smith, Forsberg
1/17/17: RU 20, IA 11 (+9) - home; Roberts, Kantner, Jones
1/04/16: RU 20, IA 5 (+15) - away; Vaszily, Suffern, Kantner
1/04/15: RU 20, IA 17 (+3) - home; Morris, Daley, Blauch
That's an average of 11.8 more fouls on us than on Iowa across 6 meetings. The next closest disparity against a Big Ten team is +7.1 vs. OSU, then +6.0 vs. Indiana. And on the road at Iowa it's +14.7, while at home it's just +9.
As far as individual refs that we regularly see that have high disparities, Bob Trammell is the worst with +7.3 average across 11 meetings (twice our normal differential), with 5 games reaching double digit differential in our opponents' favor and just 1 game with a disparity in our favor (called one more foul on Nebraska than us in Feb 2015).
Following after Trammel is Forsberg (avg +6.7 across 6 games), Cross (+6.5, 8 games), Dickerson (+6.4, 12 games), Kantner (+6.3, 12 games), Hall (+6.3, 9 games), and Roberts (+6.2, 12 games).
The referees that tend to have foul discrepancies lower than our average of +3.6 are Thompson (-0.4, 9 games), Resch (-0.3, 6 games), Spurlock (+0.1, 7 games), Gulbeyan (+0.7, 6 games), Bob Enterline (+0.8, 6 games), and Blauch (+1.6, 16 games).
So, for this game in particular, it's possible that Kantner and Roberts were more to blame for the disparity than Napier was.