Jack makes a point of remembering the location of the Spanish encampment. He might return later. With plans. It should at least keep them a safe distance for a while.
If he knew of the risk of being caught by the men of her tribe, Jack would agree they should hide. He knows this won't be taken as well by them as by the women. He looks at her when she tugs at him and follows after. He wants to find the fountain and it seems time is running out to do so. At least to do so safely.