Use a snake hook to get her out of her cage; a small metal object won't bother her too much whereas 2 hands attached to a big scary human will scare the **** out of her, which puts her in defensive mode before you've even started handling her. You want her in relaxed/exploring mode so keep that in mind. If she's out and about, open her cage door and let her come out of her own free will if at all possible. When handling, keep your hands away from her face, try to remain unseen - hold her so she is facing away from you, try not to restrict her movement as she will feel as though something has got a hold of her which she will not like. As she moves foward you will need to move one of your hands forward to support her, do this gently keeping your hand out of her line of sight - be the tree as someone once said. Being a yearling you can probably still hold her between the fingers of your hands. Use the contact of your hands/fingers with her skin to create a slight bit of friction This will allow you to control how fast she moves, but remember you don't want to restrict her or she'll panic. So only slight friction, this also gives you the benefit of a) knowing immediately if she's going to lunge which could result in her falling from your hands onto the ground and b) if she does lunge, a quick squeeze of your hands and you will have a good grip on her preventing her from falling and possibly injuring herself. It will probably result in a bite but better an injury to you then to the snake.
That'll do for now, hate typing on this stupid phone.