I thought the same about the Girona game and Atletico Madrid really finished them off by 3-1.

Actually Girona scored a very early goal to get ahead but this was still not enough to stop Atletico Madrid. Griezmann played a really important role in the win by scoring two goals as well. He is still a very crucial player for this team without doubt.
I don't expect Villarreal to be a huge problem for Athletic Bilbao honestly. Athletic Bilbao already won away by 3-2 before. I expect an even more convincing win this time. The players must be very happy and motivated after winning the Copa del Rey title.

Villarreal is capable of taking points from Athletic Bilbao, although Marcelino's team has a frankly weak defense, so this will significantly reduce their chances in this match. Simione achieved an important victory in the match against Girona and now has a comfortable 5-point advantage over Bilbao. By the way, Barcelona beat Cadiz and now almost certainly became unattainable for Girona. Of course, they won’t be able to reduce the 8 points to Real Madrid in the remaining matches, but Barcelona’s position in the table looks good.