I will answer as it relates to traditional BRRRR, in the general case there are additional options.  1) Do not perform maximum cash extract.  

Those accounts are shared across multiple properties since guests don't all watch TV at the same time.I've only had one guest not be happy they didn't have traditional cable but that's when I explained football was on YouTube TV and all was well.

The more traditional way, assuming you actually have adequate equity in your rental, is to take out a HELOC on the rental. 

They can separate themselves from traditional real estate investors by building a robust EIN Corporate Credit ("Ever-Increasing") investment infrastructure that allows for faster portfolio expansion and more sophisticated financial maneuvering.

This is one way, but in the traditional sense in private equity, it would be an acquisition fee to the GP, asset/and construction management fee to the GP, and then a waterfall on the exit - possibly include a promote for exceeding expectations.

It can be more capital intensive up front and take a little more time than a traditional BRRRR but it gets you started.  

Firstly, they are significantly more affordable than traditional houses, often reducing the financial burden of homeownership.

The traditional thing would be for her to decamp and then make her own tearful podcast: How That Bad Man Made Me Do Those Bad Things.  

That would be best option as a traditional bank wouldn’t do this I read that I can assume the existing mortgage.

I am very familiar with how to list a traditional, non-furnished house for rent on Zillow.