I'll self admit I jumped to the conclusions and had my witty retorts ready to go...
Amygdala rightly shrunk, here is my thoughtful response...
Significant dependency on many factors can contribute:
1) Humanity. (see Biles, Simone, a.ka. the Gymnastic G.O.A.T.). There is a high daily variability in people performance day to day (Seniors is 14-16 year olds? So hourly, if not minute by minute variablity is expected (come to my house - 17 yr old boy and 15 yr old girl - if you want proof.
1b) Who knows what they did between games? When my sons' club teams travels, they are prohibited from going in the pool since a many moons ago team (this is an established program) left all their energy there and got wiped out.
2) Pitcher performance. Softball/Baseball is so dependent on the pitcher. She may have pitched the game of her life the first night or had the worst night of her life the second. And/or, she got the equivalent of flipping heads fifty times in a row the first night (i.e. defense made plays, was 1/4 of an inch closer to the strike zone because of the wind or her catchers framing, etc.)
2) Catcher. We know how important F2 is - see above, U3K, passed balls, etc.
3) The bats. We've all seen a teams bats collectively fall silent. They may have incorrectly thought they had the umps zone figured out from the night before and were working walks (if same PU) or couldn't figured the new PU - NOT saying the PU was deficient in either case but a new PU is a new zone.
4) Humans were involved
5) Sh*t happens