Well played. This has met with good results in the past...

agreed Kf8 is better

Bh6 would follow, losing an exchange as a minimum.

Castling would have been met by 12.Bh6, e.g.: 11...0-0 12.Bh6 Bf6 13.e5!? dxe5 14.Rad1 Qe7 15.Ne4 Kh8 16.Nxf6 Qxf6 17.Bc1 ... 18.Qe4, White recovers the pawn and is left with the better structure.

not best, 12 e5 should be considered by W

White seems to have a wide variety of options to choose from, here. I might have been tempted by 12,Bg5 (e5, 13.Qg3)

Yes.

13 ...h5 followed by 14...h4 is possible here

f5... based in that if white takes, Bxf5, with developement, and black's pawns are solid.

14 f4 opening things is worth a try here 14,Bb2 is the wrong square

The B was there to prevent castling.

Bd2 might actually go quite well with f4. I'm not so sure that this bishop move is all that bad!

White is attacking, for sure! I miss the f pawns to define the attack though.

White has quite a big lead in development. Black's game is pretty solid, though.

The two steps instead of one might have redounded to her advantage, I suspect. The pressure in d6 would probably have been more easily neutralised after 14.Ba3 (that's the feeling I get anyhow).

Actually, I think Joe might have the right of it. But maybe better would have been 17.Qd3 instead. The motives behind this are: [a] That White does not want the Queen to get stranded on the K-side without a retreat. If the Queens come off, Black can really fancy his chances. [b] That the Queen can then continue on to the Q-side (Qd3-a6) and cause trouble there.

the computer is right Qe3

I prefer 18.Red1 here, doubling up on the file.

a blunder, yes, mostly likely brought on by the realization that to get her B to g5 it needs protection, but forgetting that Qxh4 is possible for you, I like Red1 doubling the rooks, and then going back to a3

agreed

compounding her error. GM David Bronstein used to say that one error is usually followed by more errors. His wisdom is certainly true here.