Because she had 3 tags when you cleared 10 bars, which is more points. You'll need to clear 17 if you want to improve your score.
Re-running champs on later days, when they now have different # of Tags Bonus pts versus when you ran them initially, is reason why their latest attempts are giving fewer points even though cleared more bars.
Even though champ is on your leader board already for a given day, each day you do a fight they only get the “then-current” Tags Bonus applicable to that current day for any new attempts.
