After Muffet's manor had been destroyed, the two had spent the night sleeping in web-weaved hammocks between the trees. The following day, they got to planning on rebuilding. Muffet had recovered a shiny purple construction helmet from what remained of her wardrobe, and donned it with pride. She still hadn't found her ribbons, so her silky black hang hung freely, ending at her waist. Of course, her huge, grape-colored cigar rarely left her smiling mouth, and it emphasized both her authority and elegance, two things she desired to show off as forewoman of the project.
The workers primarily consisted of Muffet's many spiders, but since some of the work required things like opossable thumbs or a weight of more than a gram, she also hired some local monsters to help with construction. Fortunately, Muffet's supply of money and riches were in the basement and thus unharmed, so she had more than enough money to pay for the rebuilding.
Muffet had also acquired quite a few tools from a shed a few hundred yards away from the wreck that used to be her manor, and had given them out to the workers. She also have some out to Frisk, letting them to help in anyway they want.
Before the construction began, Muffet had drafted plans for the new manor, showing them off to the workers she hired. The new mansion would be similar to the old one, but bigger and with additional rooms, the purposes of which she hadn't yet decided.
First things first was to gather materials, namely wood. The forest the manor was in was, of course, abundant in wood. Muffet surveyed the horizon for a bit before seeing a patch of what looked like strong, tall trees. Muffet announced that she was going to do some logging and Frisk offered to help. So, they got some tools from a nearby shed. Frisk got a simple-looking woodcutting axe and a backpack full of explosives. Muffet got a huge, powerful looking chainsaw that she needed four arms to carry. By the huge smile Muffet had on her face, Frisk could tell that she had been wanting to use it for a long time.
To get to the trees she wanted, Muffet had set up a gigantic slingshot made from a huge web. She and Frisk sat in it as a few of the workers pulled it back, waiting for Muffet's command to release.
As the two sat in the slingshot, waiting to be flung into the wild blue yonder, Muffet flicked a few switches on her chainsaw. She turned to Frisk and said "I trust you've been airborne enough times to be used to this sort of thing." As she talked, her huge cigar bobbed up and down in her mouth and shook loose a bit of ash.
Frisk nodded in affirmation.
"So, ready for launch?" asked Muffet.
Firsk gave a thumbs up.
Muffet smiled before turning back to the workers and saying "Alright, boys. Send us off!"
The slingshot was released, flinging Muffet and Frisk far off into the forest. They both grinned with glee as they soared over the treeline. Soon, they began to arc downwards. Frisk landed on the top of an especially tall tree, while their mother landed a short while away on a rather leafy bush. Muffet climbed out of the bush before making their way to the tree Frisk had landed in.
"Hello!" she said, taking a hands-free drag on the huge stogie hanging from her mouth. "Nice to see that you've had a soft landing. But, you seem to be stuck. I think I know what to do."
With a somewhat maniacal giggle, Muffet pulled the cord on her chainsaw. The power tool roared to life and the spider girl quickly swung the blade into the trunk of the large tree. The roaring blade of the machine dug into the tree, spraying sawdust in several directions. Frisk could feel the giant tree begin to shake as Muffet cheerfully hummed to herself, cigar burning ever brightly in her mouth. As the tree came crashing to the ground, Frisk jumped off, soon being caught in Muffet's arms as she set the chainsaw down. Muffet gave them a big hug and a smoky kiss on the cheek before setting them down and picking her chainsaw back up.
"Alright." she said. "Time to do some logging."
Frisk nodded, holding their hatchet over their head.
Together, the two spent the next hour or so leveling the section of forest they had landed in. Muffet used her chainsaw to bring down even the sturdiest trees in a matter of seconds, while Frisk used their axe to chop down some of the smaller ones. For every tree they felled together, a swarm of spiders would come and carry the fallen tree back to the construction site.
At one point, Frisk took out a bomb from their backpack and walked over to Muffet.
"That, dear, is a bomb designed for just such an occasion." she smiled. "It's powerful enough to blast a tree in half, but it won't cause a fire. Go ahead."
While Muffet didn't specify to light the bomb fuse off of her cigar, Frisk could sense that she wasn't going to stop them from doing so. So, they held the fuse up to the cherry of their mom's cigar, before hucking it at the nearest group of trees. With a boom, the trees were blown right out of the ground, landing a short ways away before being carried away.
"That's the spirit!" grinned Muffet, patting her child on the head. "Now let's gather some more lumber." she added, revving her chainsaw again.
After a short while, they had gotten most of the wood they needed to rebuild the manor. They watched the spiders carry the last of the lumber back to the construction zone as they took a walk through a more intact section of the woods.
"You know," said Muffet, "you're quite the little lumberjack. Thanks to you we have enough to rebuild the manor in record time."
She said "You make me proud." and promptly gave them another big, six-armed hug. However, a tiny flake of ash fell from Muffet's cigar and onto the fuse of one of the many bombs still in Frisk's backpack. When she heard the sound of a fuse sizzling, Muffet opened her eyes, blinked a few times, and said "Whoops. How clumsy of me."
From where the construction workers were, there could be seen an enormous purple mushroom cloud erupting from the forest, blasting half of the forest away.
When the smoke cleared, Muffet and Frisk were both standing in the middle of a bunch of fallen trees, again covered from head to toe in soot. As the swarm of spiders came back to collect the lumber, Muffet just giggled and said "Well, I guess having a few additions to our home wouldn't be too much hassle."
With that, she led Frisk over to one of the few intact trees nearby. She bent it back and used some webs to hold it in place as she and Frisk climbed on to it.
"Would you like to do the honours?" asked Muffet.
Frisk nodded and took out their axe, using it to chop the webs holding the tree down. In one swift motion, the tree snapped back, flinging the two back into the sky. They landed back at the construction site with a smile, and Muffet turned to the workers she hired, saying "Okay, boys. Time for step two!"