My daughter is driving me around the bend she's driving me nuts but at the same time I feel so sorry…

My daughter is driving me around the bend she's driving me nuts but at the same time I feel so sorry for her because off what's going on with her daddy she knows something's up but doesn't know exactly and I feel like she's just as frustrated as I am but Doesn't know how to deal with it and I feel so helpless feel like all she does is cry be cheeky yap and all I do is shout then cry myself