To my most faithful student, Twilight Sparkle,
Twilight, contrary to popular belief fire is not the answer to all problems. While fire may be tangentially involved in the problem-solving process, rarely is its direct application going to result in the desired outcome. I encourage you to spend your time awaiting trial for insurance fraud and/or arson thinking of ways you could have solved the problem of structural and monetary instability of an orphanage.
I will offer this as an example to get you started: Following instead the trail of bits that should be leading to said orphanage from the crown's coffers. Using your prodigious magical capabilities in conjunction with your friends voluntary support to repair the orphanage yourself. Ask the orphanage matron what she thinks would be most helpful for a long-term solution.
Looking up another lawyer for you,
Princess Celestia
Dear Anon,
On the 'Twilight Bucks Up' bingo, does this count as C3: Burning down an orphanage and A1: Solving Problems With Fire, or just C3?
Your friend,
Tia.PS. Please forward me the actual information for the orphanage, such institutions are supposed to be pulling a stipend from the crown in addition to donations to support costs such as food, water, education, and structural stability. Somepony is going to have a very bad day.