Looking at the pleading expression on Hu'er's face, Ling Chen remained silent. At the same time, he was very conflicted.
On one hand, he didn't want to put Hu'er's life in danger because this incoming battle wasn't something a puny 6th rank demon beast could take part in. Not to mention they were already greatly outnumbered.
Her presence would be more like a burden or a liability rather than an asset. On the other hand, he didn't want to deprive her of the right to take revenge for her clan.
He also understood Hu'er's desire to participate in that battle. He would have done the same thing if he was her position.
If someone were to destroy the Heavenly Demon Sect and killed his father, he would have chased that person to the end of the world and killed that bastard even if it meant putting his life in harm's way.
Ling Chen calmed his thoughts and looked at Hu'er again. He was quite unwilling, but he ultimately agreed: " fine, you can come with us."