Transition to her touching a physical target that's IN your hand - like the lid of a small Tupperware container. Then work toward getting the target out of your hand and onto the floor - while she maintains the solid nose-bump behavior. Move to the floor gradually. If you go from in your hand to the floor, most dogs can't make that leap.
Once you have that behavior firmly established, then you can use the target to send her to different places and it's also a great tool for teaching a solid two on/two off contact behavior in agility.
Once you have that behavior firmly established, then you can use the target to send her to different places and it's also a great tool for teaching a solid two on/two off contact behavior in agility.