The verb here is actually "went." She apparently met some of the other women who also had gone to the tomb (Mark 16:1). When they saw the stone rolled away, Mary Magdalene ran back to tell John and Peter (who, by this time, had gone back to be with John and Jesus' mother).

Source:

KJV Defenders Study Bible, by Dr. Henry Morris, Ph.D.
Publisher: Thomas Nelson
Language: English
DEF 10 ISBN 0-529-10444-x
DEF 10-1 ISBN 0-529-10445-8