1 Nephi 5:8

" Now I know of a surety that the Lord hath commanded my husband to flee into the wilderness; yea, and I also know of a surety that the Lord hath protected my sons, and delivered them out of the hands of Laban, and given them power whereby they could accomplish the thing which the Lord hath commanded them. - 1 Nephi 5:8

This verse tells us a lot about Sariah. Sariah hadn't received revelation that she was supposed to flee until after they left. In fact, they were 275 miles into their journey and she had just sent her sons on a 550 mile road trip through the wilderness. Sometimes we just need to trust God. Sariah certainly had a "go and do" attitude.