What a horrific accident! You are very quick thinking to do what had to be done to avoid the trailer. That and the seatbelts definately saved your family. It is nice that your DMIL is helping out in whatever way she is able so you can recover a bit. Since you are the one everyone is counting on to be strong, please take care of yourself physically and mentally. Talking with a counselor is a good idea for all of you. Take care and prayers for you and your family.