That introduction was way too late. It's good that they got introduced but at the start would have been better rather than at the end of it. And yeah it's nice that Ibis call her off on the 1 vs 1, you had to be very insecure to change a 1vs1 in a 2vs2 just because you can't win 1 on 1.
Kinda refreshing to see a serious and competent sporty girl that is actually self aware about strategies. Usually the trope would be her getting overconfident and learning how to rely on others (which might still be the case to a lesser extreme)
The only one getting anything out of this is Tsubame I suppose. Practice against real opponents would probably be invaluable to her given the gap in experience she has with everyone else.