So, if she bought the bitcoin for $1 million and is now using it to close on a $10 million property, that is a $9 million gain that needs to be accounted for in her income tax.

If you go with the partnership route1) You need to manage the money going in and out of the business bank account.2) File a partnership return and be responsible for issuing K-1's3) make distributions to you and your partner for cash flow that you receiveYou will likely spend many hours on a nice gesture.I may want to consider instead to give a christmas gift or a bonus for early completion of projects.

For that, you'll want to ensure your LLC is already set up and approved in the state where you’re operating.Most lenders are fine with the funds coming from your personal account, especially if the LLC is newly formed.

You can opt to automate rental payment collection so Turbo Tenant collects rent, and deposits it into your bank account. 

You’ll need to treat it like a business—handling tenant management, accounting, legal compliance, property maintenance, and more.That said, when done correctly, it’s a powerful tool for building wealth!

It seems like anyone can post anything without accountability—very concerning.  

I am leaning towards that you should house hack if you're monthly payment and accounting for capex/opex/reserves make sense.

How much did you buy it for and what's your annual tax bill?

Can you set up an account and post a rental directly on Zillow if you are not a realtor? 

The original six month tenant I had extended the lease 9 times and stayed a total of 5 years, paying me about $15k over market rent annually.