GM - you might think about keeping just one bird for a while and work at getting her trust. It is a slow process that requires patience. Even if you get a new bird you will still have to have patience and spend a lot of time training the new bird.

Here are two links to some of Lisa's suggestions. It would be good to read thru these to give you a good idea of what you can do.

Hand Training a Parakeet -

Q&A on Hand Training a Parakeet -