Hi Joanne , my name is Jack
Sorry it took that long to get a reply
I`m afraid that replacing the battery would not be the solution if your camera got soaked
Water and electronics do not match very well and beside drying it off and hoping for the best i would say that your better option would be a new camera , again , sorry for the poor news
One thing though ; the SD card is very likely still holding saved pictures and could be useable
As i said above , your best hope is to remove any power from it and let it dry a few days
Please do not use the rating system negatively if you do not like the news , i did not soak your camera and i am just giving you my best opinion as an experienced tech.