Haven't we done the same?When the lawmakers went against Gods word,did he stop his ministry or healing?Remember,they told him to stop,called him a blasphemer,and charged him with inciting riots. And he didn't rescue her so much as pointed out that they were already under the same condemnation.
He rescued her from a mob willing to stone her to death and from eternity away from him.He told her to,"Go and sin no more".To the mob,"Let he who is without sin cast the first stone."One led to the other,simply by not allowing the law to be used as a method of murder.
re: the stoning:
Jesus didnt break any laws by pointing out they had sin. The people stoning her stoppped of their own volition. Jesus did not break any laws. He did not grab her and run away. He didnt put a shield over her. They stopped on their own, they didn't have to stop.