i can't seem to defeat the night fall captains,but i can defeat the ents and the other enemies any tips or advice? If it will help you i can send you the links of my party pets

WE went and found your battle party ourself (and our first question... is why Lillith has a rare non-Grove equip? Those are kinda trash?)

Nightfall Captains, the first thing to remember is to always keep an eye on their Mana count- once they hit 100 mana they use Vanish, which means that for the three following turns all their attacks will be Crits, and none of your attacks will hit them.
With an Earth tank, you can use Thorncoat when the Captain's either at 90 or 100 (depending on your own speed), but your tank is a Dark.
Basically, just make sure you have at least 30 mana at that point and use Block for those three turns.

Other than that, just make the best use of your mana as you can in your attacks, don't be afraid to use healing moves or items.

See about getting either Grove items, lv50 or 60 legendary equips, or mythical lv50 equips for Lillith and Bolt's accessory slots.

Also, Bolt has an Evoker item when he's statted to Agi and all his other equips are Illusionist/Lightbringer?)
(my own light pets are more Int/Dex, because more damage = better heal)

And Lilith has no Dex prof- Air pets do better with at least one Dex prof because their ability to inflict the Bleeding debuff with Slash depends on critical hits.
(it's the debuffs like Bleeding and Siphoned that'll get you at least some damage while the Captains use Vanish)

thank you for helping me and i didn't find any grove accessories for bolt and lillith but kept their old ones on so that was why they have those accessories so now i'm going to change them and lillith and bolts stats