@Dolphin-smiles unfortunately both my wife and I are going through the perils of anxiety and depression over it. But we are both getting help to be able to support our daughter. It is hard to stay sane, but as any parent should, being there for our daughter keeps us going.
You should be so proud of yourself for being the rock your daughter needs at this time.
Fyi, our daughter is more close to my wife than me as well. I thing that's a pretty common thing. As a couple my wife and I also make sure our relationship is stable around our daughter, when she sees that we are holding steady through the storm, she seems to be a bit stronger for herself.