Ngl, that's a shit amount even if you were doing it for the money.

There's an Arcanite paying 500t per week for boarding until AvL right now. 3 months means boarding is worth 6kt/g per dragon. Unless you're boarding only 16 dragons for 3 months, which doesn't sound like you are, you're still getting fleeced. Not to mention, she didn't even give you a date when these dragons should be gone from your lair.