I would say things like, 'I bet you really miss your daddy. I really miss him, too. But sometimes I get mad at him for not being here. Therefore, he encourages parents to get help with any stress in their lives. Getting help when it's needed will result in a calmer parent.
Numerous resources are available on most installations to help parents cope in stressful situations.
Many posts have a counseling center, like the one at Fort Riley. Other guidance and support can be obtained through the soldier's chain of command and organizations like Army Community Services.