“And when Jesus saw her, He called, and said unto her, ‘Woman, thou art loosed from thine infirmity’. And He laid hands on her: and immediately she was made straight, and glorified God.” Luke 13:12-13 (KJB)
As Jesus was in the synagogue on the Sabbath day is not an oddity. It is in fact a normal part of His life. He sees this woman bent with a physical, even a weakening ailment that has afflicted her for eighteen years (v. 11).
She does not cry out to Him for help or healing; rather He calls her to Himself, lays His hands on her, after He says to her “Woman, you are loosed from your infirmity”.
Jesus later in His “discussion” with the hypocrites says this affliction was from Satan who has bound her for eighteen years (v. 16). So she is not only healed of a physical ailment which has kept her in pain, weak, and unable to do many things for herself; but she is now also free from the spiritual torment caused by Satan.
The Lord Jesus saw her, called her, He healed her, and loosed her from her bondage. He has done that for all who will come to Him through His death on the cross, His burial, and resurrection. He went all the way to fulfill all the Scripture concerning Himself; and to redeem unto Himself, all who would come to Him. Freeing us from our infirmities and all that binds us.