It works fine for me. No idea why it would still cause problems for you, even with the changed map file....
The only option I saw, was to advance the event, and send you the save file for after it is over.
You can download it here: https://mega.nz/file/i9pzkA4I#_URs-llbXM_gG_CXJFXV5gMQR0v0_2eiZOo753nWUDc
The dialog you missed:
> After Hellhound drives you into a corner:
Ryen: Damn! Guess we have to fight!
> After winning the fight:
Hellhound: That was fun~
Trey: I don't understand. You do seem to know her. Is she an enemy or not?
Ryen: She's...a troublemaker.
Hellhound: Master! Why did you leave me behind! It was so boring without you!
Ryoko: Is she another servant? Or more like a pet?
Ryen: Her understanding of fun was to ambush and attack me constantly.
Hellhound: Fooling around with master is always the best!
Vampire: I don't like her! Hush! Get lost!
Ryen: Don't worry. She's very lively. She'll run off and appear wherever and whenever.
Usually picking fights with strangers on the way.
Hellhound: Fighting is nice! I love to fight! Which reminds me! I still have to beat someone up!
> Hellhound runs away.
Ryen: And off she goes....
Mira: She seems dangerous and yet so cheerful.
Ryen: She is a good girl, just a bit crazy.
Tsubaki: And she had quite the beautiful chest. Brad could barely stop staring.
Brad: What!? Nonsense! I was just impressed by her fighting style.
Tsubaki: Sure.
Trey: Since it's my duty to protect my king, I'll do whatever necessary to keep you safe.
Ryen: Don't worry. She wouldn't kill me. As I said, she is just a troublemaker.
Trey: Understood. We should still stay on our guard when she is around.