After step parent adoption...

Congratulations on your new little family! It's hard to leave past troubles behind, but it seems like you are moving forward with confidence. I agree with Annaleece. It's better if the truth comes out, if only to get it over with. I'm sure they will understand. Surely they know that the little one's safety and so on is most important. It will put them in a tough spot as her father is their not-so-little little one, but I think they will understand. Good luck!