I was just made an authorized user on my parents card so I can start building credit

If you wanted to go this route.If you want to keep your tenant, have them sign an agreement not to have the named subject at the property and anyone else not authorized on the lease or section 8.

If the dad is solely responsible for the rent payment and if you don't want to redo the lease completely, she could be added as an authorized occupant.

Later that evening my wife noticed they had a total of 8 people at the house around 8pm, she sent them a message reminding them of the covid rules as well as our #1 house rule stating "Any un-authorized guests on the premises will force the cancelation of the booking immediately".

So find your market which you know like the back of your hand or have friends/family/colleagues who know a market and start looking there.If you're going out of state I recommend reading the Long Distance Real Estate Investing book by David Greene and identifying a market with this spreadsheet (FYI I'm not the author, but found it very useful!).

@Iqbal Zaveri  The law is clear on this and the Housing Authority is correct.  90 days notice is required when terminating the tenancy (or failing to renew the lease) of a Section 8 tenant in California. 

A “net listing” is defined as an agency agreement in which a prospective seller lists real estate for sale with an authorization to a broker to sell at a specified net dollar return to the seller, and which provides that the broker may retain as commission the difference between the specified dollar return to the seller and the actual sales price.

Indiana Housing and Community Development Authority has some rental assistance programs available that they should know about and steer tenants that are having trouble making their rent payments.

Getting into more details here, you can specify who has what authority.

(e.g. the screen is ripped or the window has a crack in it)  Once fixed and re-inspected, the housing authority catches up on payments and then resumes payment.