Why are the stories of the healing of the woman with the hemorrhage and the raising of Jairus' daughter presented together, and how do they relate to one another?
The woman’s belief that she would be “made well” could also be read “saved” (Gr. Sozo, and is the same word used by Jairus when he asks Jesus to heal his daughter). This theme of touching Jesus’ clothes and being “healed” or “saved” is repeated in 6:36; and Jesus’ statement, “your faith has made you well [i.e., saved you]” is repeated verbatim in 10:56. We have precedent in Mark of physical healing being associated with spiritual healing (i.e., salvation, or the forgiveness of sins) in 2:5-12; and also of the healing that Jesus performs being a response to faith.
Whereas the woman only wants to touch Jesus’ clothes, and hopes to remain unnoticed; Jairus boldly asks Jesus to come into his home and “lay His hands” on his daughter. It is interesting that when Jesus addresses the woman, he tenderly calls her “Daughter,” which enunciates the wholeness of her healing—she is no longer an outcast, but a cherished family member of Israel’s household. (This may remind us of Isaiah’s image of the restoration of Israel's "daughters" which is prophetic of the New Jerusalem, cf. Isaiah 60:4). In both cases—the healing of the woman, and the raising of Jairus’ daughter—Jesus states that faith is required in order for healing and resurrection to take place. Whether you are an outcast of society, or a member of the religious and social elite, it is your faith that will “make you well,” a “wellness” that has significance beyond the present moment. As Morna Hooker states, "the child’s resurrection would be understood as a symbol of [Israel’s] own future resurrection. The story of the woman would have been of special interest to the Gentiles, since they too, had once been ‘outsiders’, excluded from the community of God’s people. Both stories would have brought reassurance of the new life and salvation which came to believers through the power of Jesus.” 
 Morna D. Hooker, Gospel According to Saint Mark, The (Black's New Testament Commentary), Reprint ed. (Hendrickson: Baker Academic, 2009), 148.