Just as quickly (Gr. euthys) Jesus perceived that power had gone from Him. The harshness of the disciples" reply is unique to Mark. Luke wrote that Peter voiced it ( Luke 8:45). Probably the disciples were eager to get Jesus to Jairus" house before it was too late. Yet Jesus wanted to speak to the woman and to assure her that it was her faith in Him that had resulted in her healing, not merely her touch. He "looked around" searching the faces in the crowd to discover the person of faith. [source][source][source]
"His healing power did not work automatically, like a battery discharging its power when accidentally short-circuited. Jesus perceived in Himself, without any external suggestion, the significance of the woman"s touch, and, actively willing to honor her faith, He was immediately conscious of His healing power going toward her. His power, the inherent ability to perform, was always under the control of His conscious volition. His consciousness of that power going forth from Him suggests that His healing ministries cost Jesus much spiritual energy. It would explain why He found it necessary at times to escape the crowds to find time for refreshing through fellowship with the Father." [1][source]