So the recommendation will be to reroll, as it seems like you just don't have much to lose if you do so right now. Both event rewards-wise and what you've rolled.

This is also not the worst time to reroll. Rahab gets another reprint which ought to arrive here in late December. Medusa doesn't have great stuff to get anyway. Next event's a union event and the one after that is raid. So you have time before you need to rely on your own strength for event rewards.