As of right now (six 25s recorded on Sept 10th) it appears that she has exactly 100 RRs as a TL, going back to (and including) the last 27 that she carded on November 18th. That's one 27, seven 26s and two 24s in addition to the ninety 25s. If you go back any farther than that, her average would be greater than 50.14, and if you don't go back that far it would be less. Those November rounds say "legend" in her score history because she entered that tournament as a Legend.
She needs 8 more 24s (or one 23 and six 24s or two 23s and four 24s, etc.) to reach 49.99, unless it takes more than 299 additional rounds, at which point she'll lose the rounding advantage and need an additional stroke.
She could also card 400 more 25s, saturate, then shoot seven more 25s to technically get her average below 50, although she'd need one more (due to rounding) to get it to display 49.99.