It is likely that this match will look like usual without any resistance from Barcelona. They already know that they are quite far behind in points so Barcelona will likely play more calmly and not think about whether to win or not. If Barcelona doesn't win in this match, they will still be in second place on the standings. The difference in points with Girona is still two match wins, so it's far enough for Girona to catch up.
This match hasn't been held yet, we don't know how this fight will go. Even though Barcelona has quite a big difference in points with El Real, that doesn't mean they will just give in. Moreover, this match is a matter of two teams competing for prestige. As we know, El Clasico matches will always be characterized by fierce battles between the two top teams in the Spanish League. I am quite sure that Barcelona will continue to play professionally to try to overthrow Real Madrid. IMO, this is in Barcelona's interests apart from points. Barcelona needs to win at the Santiago Bernabeu, apart from for the club, the team and the Barcelona supporters themselves.
So, as usual El Clasico will provide an interesting and enjoyable match. even though in reality, Real Madrid is more favored by the betting bookies for this El Clasico match. So, if Girona wants to get close to Barcelona's points, they have to win the match and hope that Barcelona loses to Madrid in the second meeting this season. Thus, Girona narrowed the points gap with Barcelona. but if on the contrary, Barcelona is getting further away from Girona even though their position remains in 2nd place in the La Liga table.