When Mom's Not Happy, Daughter's Not Happy!

It's been a long day!
When my physical abilities and emotional energy are both so drained, it noticably impacts our kids. Our 9-year-old is a rock, but I ache for him that he takes so much adult responsibility on his shoulders. I appreciate his strength and stability, but also pray for him as I wonder how much he enternalizes in healthy or unhealthy ways. I want to be his Mommy and protect him for the impact of my illness, but I cannot.
I see some negative impact in our 3-year-old (mostly in copy-cat outbursts following his big sister's example), but our 6-year-old seems to have the hardest time coping. Please pray for her as she has been really acting out this week. She struggles with the same Romans 7 ("For what I want to do I do not do, but what I hate I do.") sinful nature that we all face, but for her it seems especially hard. I cover her in prayer and strive to give her extra patience and grace (ballanced with the stability of firm paramaters and reasonable consequences), but this is a hard season for both of us to cope with. Your prayers for her (and wisdom/strength for us as we parent her) would be especially appreciated right now. She is such a precious blessing and I grieve for the heartache my limitations cause her.