So it seems. I wonder what it does, though. If the storm was summoned by Himiko and her regalia was lightning, then if the relation is indeed so direct making Jeanne's regalia divination (which also seem to be her only skill aside from big boobs and a pretty face), it would certainly be handy. He would never be ambushed and could anticipate enemy moves. However, how many wives could Nobunaga take? I guess he will go without now, having already accepted Himiko. Besides, Jeanne is Ranmaru for the time being.
I really hope Jeanne won't be needing rescuing all the time. It would get annoying, especially when she seems to have such weaknesses, like pyrophobia, and few strengths but still insists on wandering the battlefields.