We have been through this with all 3 of our kids over the years. Either a bad dream or something scared them that they wouldn't discuss. When they were little they would sleep in between us and if they were like 8 or older we would bring their mattress in our room and they would sleep on their mattress on our floor for the night. This never developed into a problem where they didn't want to go back to their own room. I would never be able to forgive myself if I didn't comfort them (not baby them) when they were scared. Heck my oldest is an adult and her room is on a different floor and sometimes she will sleep on her brothers floor if there is a storm. I don't even sleep good when my husband is out of town...how could I fault my child for being scared. Most recently my youngest son slept in our room and his brother's for 4 nights after seeing the Sandy Hook school shootings on the news. It's your decision but I agree about putting her back in the dining room for a few more years. I bet it makes all the difference for all of you. Best wishes!