S.W.
I worked in the pediatric dental field for almost 20 years before deciding to stay home with my children. Teeth grinding is a very common concern among parents of small children. Grinding is common in young children especially when they have sinus congestion. Grinding and clenching can sometimes be a subconsious effort to relieve that congestion. Because she is so young, it would probably be a little preemptive to have a nightguard made. She also may not tolerate wearing one, they can be very uncomfortable even when custom made. Chance are, she will grow out of the grinding. Of course, you should always consult with your own dentist for his/her opinion. Good luck and I hope your daughter gets some relief soon!