What's there to lose? Li Suyin has an escape talisman, and the entire cave system is underground, so is dark enough for Ling Qi to just break and run if things go poorly. The worst case for holding ground is that escape becomes necessary, and the group is out the loot from this fight and Suyin's talisman. Meanwhile, this kind of fight is what Qi is good at, as long as she learned her lesson from the tournament, and what Suyin brings is very complementary, in providing more bodies to buff and fight attackers.As is, it's a touch of a hard call for me, with loss aversion struggling quite bit with FOMO.
In fact, this is a decent blueprint fight for Ling Qi to bring with her when managing her barony's forces in the future, even if she trades out her group buffs for more debuffs, because Forgotten Vale is such a huge force multiplier for competent allies.