the most important thing is to try put those type of games behind you untill the end of the tournament so you can concentrate fully on the next game!
One careless move in the ending is enough to ruin all the hard work!
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yes, actually all these worst things happened in the first half of the tournament where I scored only 2 points out of 5. But then I improved in the second half by scoring 4 out of 5.
Yes, it was Kf3-Kg4 was the move. Actually, during the post mortem of the game, we discussed this hxg5 and fxg5 possibilities instead of Kg4 but could not find a win. My opponent told me thats why she offered a draw after Kg4.