Nena took in the situation as the skeletons were dispatched, and when she was done, decided she was the leader of this little guild, and started to give the orders.
"Rabbit! Go help Shiro with the skeletons, I'll hold off the big guy!" she exclaimed, moving forward to the bridge as she did so, and making it impossible for the skeleton to proceed without first going through Nena, and she intended to make going through her a difficult task indeed. Trusting her party members to follow her orders - and really, there was no reason they wouldn't, the command was stratigically sound after all - she began to prepare for the skeleton's arrival. His armour would negate one of her damage skills, since it specified unarmoured, rather than armoured, but she was confident she could take this creature. From the looks of him, it'd be high health, high damage, a tank skelly. 

Nena's next move put her in the hands of her party members, as she adopted the form for her Wolf Swallows Moon sword art, to prepare for the impact of the big guy.