Hi Fat Lady.
I think I know the girl you are talking about.
There are loads of good players like this out there.
They have developed back-to-front. Usually we start off with gambit trappy
play and pick up all the tic-tac-toe tricks.
Then when our hairy attacks are hitting brick wall against good players
we seek other ways to win and play what they call full rounded chess
often keeping the ½ point in the back pocket and going for the grand slam
attack if the position demands it.
(some stay with the hairy scary style.......guilty.)
Nothing wrong with this safety first rock solid approach.
She is analysing the good expected replies and when the lemon comes
she is taking it on in a positional manner.
League chess time controls tend to be quicker than International Chess
so that is where she is drifting into TT.
She could bo doubt teach most of us a thing about the game but needs
sharpening up and have more faith in her ability (which she will have)
to play quicker and punish slack moves tactically.
The solution is b7
With the White pieces on the board you cannot set up a legal checkmate
with the Black King on b7.
(g2 is the mirror square that is why I placed the White King on g2.)