For Kelyn you'll probably like Animal Growth. You can cause 8 animals to grow up to double their size, which essentially doubles their level (hp, attack, damage, ect) and lasts for 2 rounds per level, so 18 rounds for you. So you toss that on Brinley and she becomes a wrecking ball of fur, add Lance into the mix and he becomes better at dropping people. I don't think you have Necromancy right? If you do then Raise Dead and Cure Critical Wounds also open up for you, which are both very nice. Insect Plague can be nice against spellcasters, you can drop it on an area and it disables all spell casting and drops vision to a 10ft distance.