Talk to her about it, remember women like when guys are open about there feelings, if she is working then tell her you will love to spend time after both you going to the funeral and her working, maybe go out to dinner or movie, so both of you can have some time together. You need to support each other. Talking about stuff is the key, but remember that you need to be empathetic to her as well as expression of your own grief, tragedy can often bring people closer but can also cause tension, talk with her and both express your feelings, being open with your partner is important in all relationships. Sorry for your loss hope you can work through this.