Hi E.,
I'm so sorry about your loss.
I think that it would be appropriate for the kids to be with a babysitter since they are so young. I've gone to funerals and did not take my youngest. I felt that was appropriate. I think your aunt will understand. This is a time to be there for your aunt.
I will tell you this much.....always call your aunt, or go by to make sure that she's doing alright. OH! Always make sure that she's eating a sensible meal too. Sometimes grieving widows may refuse to eat anything at all. If she has any health issues, try to keep up on her meds. Something light. Soup is a good one cause widows will tend to eat very light. Their heart is aching beyond what we can even conceive.
My dad passed away December '07. I've called mom practically every day just to check up on her, she lives in a different State. Also, what I've learned from one of my teachers is that when a person becomes a widow, they may appear that they are doing fine, but the reality is, that when they are alone at night, that is when it's the most hardest for them. They will be thinking about their loved one and rarely sleep. So, it is good to keep a good eye on your aunt and keep her busy. She will never get over this, BUT if she allows herself to move on (just a hair), then she will have an easier time and eventually heal, little by little. Keep in mind that she will never get over him. My mom is a pretty strong lady and thank God she has a job to keep her busy....thank God that she has grandkids to keep her busy too. But I'm just thankful and relieved that she has a job. She is coping and learning every day to live without my dad.
All you can do is to be there if she needs a shoulder to cry on or just needing someone to talk to. That is so important.
I wish you the best and send my condolences to your family.