I think she has been thrown in too early, especially after getting battered last week in a 25K.
Well, that could all be a very good omen.
A couple of years ago, another player was in a similar situation, aged 16, same as Katie, and just about to play under a WC to qualifying in Miami, awarded to her as a top junior, as is that tournaments's tradition. This player also entered a $25k in the week prior to that Miami, and got thumped in straight sets in the first round of that $25K by the WR254.
Next week in Miami, this player then lost in round one of qualies, in straight sets (6 & 2) to a player of almost the exact rank that Katie's opposition is today. Davis is WR102 with a CH of 43. Vandeweghe, the victor of this match back in 2013, was WR 98 (with a CH then of 69).
Perhaps this player had been 'thrown in too early', time will tell. This player, was Belinda Bencic.