Keep the air moving and the dehumidifiers going. There is nothing set in stone that says a flooded trailer will be a total loss. If the water sat on top of the vinyl sheet flooring and drained out the door opening (typical) you may have dodged a bullet.
I'd suggest that you inspect underneath the RV and the bottom of the flooring. In some cases water enters this area and saturates insulation or soaks the floor material. You want to remove any water soaked insulation and get fans going underneath to prevent the growth of mold and mildew. What I would do is spray all surfaces that were wet with a mildewcide just for the added abatement of molds and such. You might get by with diluted bleach/water but there are better products out there.
You may wish to inspect your gray water drain system, also. There is a vent that may be plugged or positioned too far into the tank. An air admittance valve may have failed, also.