This another one of those tricky questions. How do you show her any changes (180's) in you when tough love is on-going (keeping minimum contact and distance).
It might be helpful to better uderstand the 180's or the changes you are working on (without invading your privacy) and then maybe we can all figure out a plan of attack for your sitch.
Being confident, happy and friendly even during just the kid exchanges wil show her alot...I am learning consisteny is vital for all of this.