Stuck before Guilford 2nd.

[Wyvern]

Hi, I'm totally stuck..

I went through Demonis and fought Guildford.
I spoke to Rezo and he told me to kill the 4 undeads and Guilford again, I still have this quest.
I'd like to go through the mines, but i'm not allowed.
I read about a quest on the griffing island, to save an elf girl, but i can't find the quest giver..

[Wyvern]

ok i solved the problem

I though the 4 undead on the beach were related to the guilford army, but I was wrong.
I killed the 4 undead on the beach in Arlania and now i have the quest to find the elf girl

Ty anyway ^^