Just do one, she is just starting and neither one of those have heavy assets. She is creating paperwork just for the sake of paperwork. Also at her size most software expenses are from the minimum charge, with doing one she won’t have to double up on charges like QuickBooks and the like. If she wants different branding create the Management LLC and then do a DBA for the cleaning side doing that way she can also share assets between the sides of the business no problem. Also as you growand to keep employees you are going to want to start to offer benefits and a lot of places won’t talk to you till you have a minimum per of employees, combining them helps with that.
I own a cleaning company. They are quoting around 7-8 man hours. Newly built doesn’t matter as much as how thorough and well has the place been cleaned. Given the size and the animals and the extra (organizing), and the price, I’m going to assume, either the place is really clean already or she way under charged.
I would at least double that price for a deep cleaning.