I'll bet they just "got around" to your files! Try not to worry ... we will be praying that everything will go smoothly. If there is anything at all we can do, you know you need only ask.
I so wish they would finalize all those legitimate, "pending", above board cases such as your families and focus on all those who are just "sneaking" into our country and not even bothering to apply for citizenship! I find it very hard to believe that in some cases, people who have applied for citizenship nearly 20 years ago, are still waiting to become citizens!