Real Madrid players woke up after and scored 3 nice goals and they are 2 points behind of Barcelona with a game less than them, so theoretically Real Madrid could pass to the first place.
I did not watch this match but based on the statistics of the match it seemed that both teams played with attacks each other with 10 shots and Real Madrid dominated with 7 on target and Girona 4 on target yeah actually not too bad and the final result Real Madrid can secure 3 points. As you said Real Madrid is only 2 points behind and next week they will take over the top of the standings because Madrid has one match to play against Rayo Vallecano.
On the other hand Barcelona is really disappointing when they only played draw against Betis, in the last 5 matches Barcelona only won once and lost 2 times, we don't understand what the problem somehow their performance worsened even though at the beginning of this season Barcelona always played aggressive.
Girona also had positions, they were quite active in the front area, but they couldn't score the goal they wanted, otherwise the result could have been different. Girona pressure was felt in the first minutes, if there had been a goal in those minutes, they would have put Real Madrid to sleep or slowed them down.
In this game, Real Madrid and Girona teams are very close in strength from the beginning, I saw many mistakes by the Girona team players due to which today's match was deprived of success. Because every player kicked the goalpost bar correctly, but they were close to the beginning of the Dbox. Every attack failed them and the ball went out of the field after hitting the goalpost bar. That's why the team could not be successful in this match, every attack they made in the first half targeted the goalpost of Real Madrid team but the attack should have been very close to the goalpost then Girona team could have been successful.