Whole party? Nah. First send everyone else to camp, then have Tav do the parkour down, sneak through Auntie's workshop to the portal to outside, go to camp and bring everyone back. Retrace your steps and lay down the smack.
That just sounds like another kind of tedium and also entirely anti-roleplay. And also not viable for someone playing the game the first time as they're not going to know there's an exit to go through, just as an aside. And on a non-mechanical point, it's another encounter that suffers from the weird issue where dialogue will initiate and just grab the nearest character instead of your main character for Ethel to talk to, thankfully I never want to let her live at least. The fact you can't seem to save Mayrina's brothers despite (I think, I may not be remembering right) getting a charisma check to try, is also just a drag that feels like the game just wants us to feel bad without really earning it.
Basically I'm on the OPs side, this whole sequence isn't just too hard, since at least you can grind to get to a higher level, but it's also just various flavours of annoying at several points.
