Figure out the economy of needing multiple incomes

Sophie 1: "Okay we can't be having you here. If Stacy sees us, we're gonna have to go on a long string of incresingly implausible lies about you being my twin or something."

Sophie 3: "You're right. I'll walk home. You stay here in the office until I'm out of sight, so that nobody sees us together."

Sophie 1: "Hang on, and you'd get to go home early while I stay here at work?"

Sophie 3: "I've not eaten anything today, and it's a three mile walk!"

Sophie 1: "Guuurl this is a business district every other damn building is a restaurant!"

Sophie 3: "Alright but you're gonna have to fling me thirty bucks or something, I don't have a walle-"

Your clone checks her pocket. She in fact does have her wallet.

Sophie 3: "Wait is this yours?"

You check your pockets too and pull out an identical wallet. You compare the bills, and their serial numbers are identical.

Sophie 1: "Now this is interesting. We can duplicate money!"

Sophie 3: "But it's counterfeit. We've gotta be smarter about this."

Sophie 1: gasp! "What if we buy a bunch of golden rings and keep them on our fingers, and then when a duplication happens we'll just hock the extras?"

Sophie 3: "What if we buy a bunch of gold bricks and sew them inside our clothes? A pawn shop might get wise on seeing us sell so many gold rings, but pure gold would be even less suspicious."

Sophie 1: "We could buy expensive electronics and resell the copies."

Sophie 3: "There's one problem though... Every time we duplicate, another me spawns. That's another whole income that we have to supplant."

Sophie 1: "Yep. It'd be hella easy if we could just like... join back together. Strip nude."

Sophie 3: "Alright."

Your clone unclothes herself with unexpected compliancy. As the original Sophie, you must have some kind of power over your clones.

Sophie 1: "Okay now just... sort of lean into me, okay?"

Your clone wraps her arms around you tightly, and focuses into the idea of becoming one. It works - in a split second, her being is absorbed right back into you. Just as you expected, her clothes and wallet remain intact. You pick up both of your wallets and compare them triumphantly.

Sophie 1: "I'm rich... I'm rich beyond my wildest dreams! Hahahahahaa!"

You storm into the hallway, only to run into Stacy.

Stacy: "Hey, I just wanted to congratulate you on your sale-"

Sophie 1: "I don't care. Here's something I've wanted to say for a long time: Eat my ass, you bitchy, uptight cunt and useless corporate waste. You can take this job and shove it. I quit!"

You throw your work phone on the floor and confidently strut outside, giddy with excitement. On your way home you stop by a jeweler and a sewing supply shop. Sophie 2 is startled upon you practically kicking down the front door, hauling two heavy-looking bags in your hands.

Sophie 2: "What's going on, why are you home so early? And did you bring that ice cream?"

Sophie 1: "You can have all the ice cream you can ever eat later. For now, help me sew these gold plates onto my clothes."

Sophie 2: "But why w..."

Cogwheels start turning in Sophie 2's head. She realizes that she as a clone was created wearing duplicates of your clothes. Your excitement infects Sophie 2 as well.

Sophie 2: "Hell yea girl, a get rich scheme! Count me in!"

The two of you sew about 10,000 dollars worth of gold into each of your clothes and then lounge on the couch for the rest of the day. You figure out that only the original Sophie clones, and that this happens about once every two hours, usually slightly offset somehow, such as appearing in a different room. In retrospect it would've been sensible to check that duplications still happen and aren't just a weird one-time event, but that's just not how you roll.

With some creative liberties as to what constitutes as 'clothes', you manage to wear about 100,000 dollars worth of gold by using a bedsheet as pants. This means that you're making a profit of 50,000 dollars per hour - quite an uptick from your previous, admittedly well-paying job.

You also diversify your portfolio to dissuade suspicions. You buy platinum, silver, jewels, opals, amber, copper, consumer electronics, even unrefined plutonium safely contained in lead-lined boxes. All of these you manage to duplicate without issue.

By chance, you figure out that a small percentage of your clones also duplicate about once a day. This comes up mostly because as an admittedly extremely hot-bodied woman, you have no qualms about making out with yourself, and keep about a dozen clones around at all times for that purpose. You proceed to rent out an otherwise vacant apartment building, refurnish all the rooms and inhabit them all with your duplicating clones for some extra income.

While your clones have minds of their own, they are also practically subservient to you, so you lay some ground rules. Your clones are not allowed to go outside without permission - all food must be delivered either to your house or the apartment building, and all exercise must be done in the apartment building's communal gym. Every day there is a five minute window around 7AM during which your clones must all be wearing their 'money clothes'.

At first this all goes smoothly, but soon enough there's a small hitch in your plans.