I've resteemed this. Touched by your honesty and have sympathies to the place you're in. Believe me, we need yoga teachers in the world! We love yoga. I need it in my life. As someone who works with using their body in an expressive way with often a busy mind, I find yoga to be the only exercise that really shuts my mind up! (And it needs shutting up!)
You have taken a passion, a thing that you love, a thing that everyone should be doing anyway and made it into a business. You have placed a monetry value on it. In order to make money we have to sell ourselves. It goes against the ethos of yoga. Everyone who does what they love for a living has this contradiction. You are not alone. This is the world we live in.
Now you have two children to perhaps bring up alone? Your attention is on them. I hope you talk to other mothers of twins because this first bit is harder than anyone can imagine. And I can't imagine, no matter how many friends i've seen go through it.
Anyway, let yourself off the hook, allow yourself to struggle with it all and be not in your comfort zone. Allow yourself to change with motherhood. Allow yourself to not be ,perhaps, so focused on the philosophy of yoga right now. Keep on going. Things will change.