KerriO, gravity will ensure this type of leak will find its way to the bottom, which is the plywood floor. Find a way to seal it before it causes damage, and take the time to do it neatly. Keep any bead of sealant thick enough for flexibility, or it will soon crack open.
We also used a towel to catch the moisture when I first noticed it, although it had not gone below the window frame. On our 20, we can crawl under the bed and see the plywood floor at the edges, as the laminate is not tightly glued there.