YOU SAID:

I’m not sure if she is going to be able to come over and help me with the kids

INTO JAPANESE

彼女が来て子供たちの世話を手伝ってくれるかどうかわからない

BACK INTO ENGLISH

I don't know if she will come and help take care of the children.

INTO JAPANESE

彼女が来て、子供たちの世話を手伝ってくれるかどうかはわかりません。

BACK INTO ENGLISH

I don't know if she will come and help take care of the children.