I hope Girona can take points in the match against Real Madrid and they need to learn a lot to make it happen. Beating Real Madrid so far has not been an easy task for any team, but of course Real Madrid is not impossible to lose. If in the end Girona wins, then they will lead the standings by moving Real Madrid to second place.
For me, that is a scenario that will benefit Barcelona, especially if Barcelona can consistently win matches. Currently Barcelona has a large points gap with Real Madrid, but if Real Madrid loses from Girona then the gap will only be 5 points. It's just a hope, but I'm not sure Girona can do it well.
The next game for Girona will be very difficult, it will be incredibly difficult to play against such Real Madrid at the Santiago Bernabeu and I would like Girona to win, but I understand that they have almost no chance of doing so. This match will most likely be a turning point, Real will win and secure a 5 point advantage and thus make this difference comfortable for themselves, and perhaps for Girona in this case it will be more difficult to find motivation to continue fighting Real. By the way Baselona will have a chance to get closer to Girona on 3 points, it's very close...
Madrid match against Girona will of course be a very decisive match for both teams and the results of this match could even change the direction of the La Liga standings later as @Cryptmuster said, and I think both teams will of course shift their focus in this match, if we can see that the difference in points between the two teams is very close and even Barcelona could still gain an advantage if Madrid loses in this match, but I think both teams will play safely and carefully in this match considering that both teams have the same good performance, perhaps in terms of Attacking, of course, Girona intensity will be a little more attacking to hunt for goals and Madrid will probably only rely on counter attacks to avoid conceding goals considering their current position in the standings, that's just my estimate and anything could happen in that match, I personally hope The game will be very tough and will even be characterized by lots of goals in this match aside from my predictions above.