The most effective training method for me was crating the pup. They won't go where they "live". The crate should be big enough for her to turn around, but not so big that she can go and move to the other side of the crate.
At her age, she just can't make it through the night.

I know crating her would break your heart, but it is fast and painless (for the pup)

My Spunky was crated at night for the first year, and now goes into the crate when no one is in the house or when he gets spooked. Of course as I write this, he is sleeping on the bed.