When Jesus got out of the boat, a man with an impure spirit came from the tombs to meet him.
Mark 16:8:
As they entered the tomb, they saw a young man dressed in a white robe sitting on the right side, and they were alarmed
The first time it is only Paul (=the Gerasene demonic) who is invited to go alone to preach to the Decapolis.
The second time it is Peter and the 12, via the women, who are invited to go (to preach) in Galilee.
The irony may be that, just as Paul doesn't enjoy the company of the 'historical' Jesus (since the latter sent alone the Gerasene), so, for the fault of the women, Peter and the 12 don't enjoy the company of the Risen Jesus in Galilee.
Afterall, the "fear of the women" may be well a parody of the fear of the rebels to abandon the defensive walls of Jerusalem. In the Antiquity, and also today, the cowardly soldiers are called "sissies".
I think that really Mark is saying that the Pillars never abandoned Jerusalem because they, as last rebels entrenched in the city, feared the Romans all around them.