I get that, but at what point do you stop and say "fuck, I've been almost killed several times, there are hundreds of thousands of people that want me dead, I now have a Dothraki army and the unsullied. Let's peace the fuck out of here and complete goal #1" ?
She has enough money and power to get ships sent from the West. Easily. All she has to do is send somebody out to get the ships and bring them back, that can't be too hard.