Play therapist can be really great. That age child doesn't even catch on it's a therapist. They use sand trays, art and other play to help kids work through issues and trauma. They usually give you tons of direction as to how to deal with it at home too.
I would be stuck if I tried to go it alone. I loathe all the appointments and driving (we are really rural so a trip to the therapist is like 45 mins one way) but the results can't be beat!
Jen