Dear Rarity,
Twilight: I understand your concerns. We will try to visit, but we're all so busy! It might take a number of weeks.
And are those things that you did actually real? Or is it just a cover for what you told me?
We are all researching into this matter as hard as we can. It might take a week to find all of the correct books while maintaining or suspicion level, so we will try to get back to you as soon as we can.
Fluttershy: Oh my. Maybe I can get a special order into Ponyville while remaining undercover... I know some ponies. We will try to stay as much in contact with you as possible. Please send more information!
Pinkie: OH. MY. CELESTIA. You need some help STAT! We don't have time for my usual shenanigans! This calls for EXTREME MEASURES.
Applejack: Oh my. We'll get right on to solving the problem, Rare! I promise!
Rainbow Dash: Oh my sun and moon! This seems serious! I'll try not to alert the weather patrol, but while I'm out working in Las Pegasus this weekend I'll keep a lookout for anything suspicious!!!
Twilight: Please, Rarity, try to keep these letters undercover. The code is a little obvious, Rare. You should've asked me for help! I'm in Canterlot almost daily!
Stay in touch frequently,
Elements