If this is your option you should try to dry the item as thoroughly as possible. The biggest concern at this point is to avoid mold and mildew. This is done best by blotting excess moisture with toweling. This can be laid out on the grass to dry in the sun or over tables and chairs inside. When drying inside, use fans to assist the drying process.
Any item dries faster if air can flow around it.
Using an automatic dryer can be an option if the quilt is sturdy. This is the second choice, but might be necessary if it is wet outside and there is no room inside to spread it out. This is the preferred home method to wash a quilt when a more suitable facility is not available because it puts less stress on the wet fibers of the fabric and the thread. Line the tub with a clean white bed sheet and fill with warm water. Put in 2 or 3 tablespoons of chlorine bleach.