Larry -
By all means, go to Swamptown. Very nice marina, with clean facilities right at the top of the guest dock. Big slips, shore power, the works. And a boardwalk to crafty stuff. Our first annual South Sound Cruise consisted of going from the launch ramp to the slip and back to the launch ramp a couple days later. It is a perfect place for Helen's first boaterhoming sojourn, and the cruise from there to JC is very easy and nice.
To further enhance the experience for her, be sure and get all the fishing gear out of the head.
Did it rain at all up your way?