Absolutely count it in your net worth. Here are two options you could use for valuation:
1. Multiple - Multiply your company's present annual revenue times the standard multiple of your industry. For instance, your company makes 1M and the industry multiple is a 9, so your company value is 9M. Then of course you divide in your shares.
2. Book Value - Ask your accountant for the total liquidated value of your company if you were to shut your doors and sell all assets. Also figure in any good faith value such as patents, branding, etc. Then once again divide in your shares.
This is not necessarily dead-on accurate valuation, just boiler plate methods. The key is for you to be conservative and consistent.
Those methods can both get you a decent starting point.
The problem though is the discounts for marketability and control (DLOM and DLOC). Based on the facts presented, Breannee likely has no authority to liquidate the company, no ability to demand any dividends, no ability affect change within the company at all. And if there is a limited pool of buyers, which there is by nature of privately held stock, there is an automatic discount for lack of marketability.
I work with plenty of companies that sound just like this one.
Imagine this scenario which I've seen multiple times: Right now things are fine. In a few years, maybe during the next generation of family ownership, maybe during the next economic downturn, there could be zero profits and thus zero dividends. The people with majority ownership, who likely are the people running the business and earning a nice wage, have no incentive to reduce their wages in order to increase profits and dividends. They will act in their best interest and leave their wage as is.
Will they look to sell the company? Not likely. Will they look to liquidate the assets? Again, not likely. Doing so would benefit all owners at the expense of their own ongoing wages. Even in a family run/owned business, hell sometimes because it's family owned to be honest, there can be an immense lack of loyalty, honesty, and fairness.
My point is this - when you have no control, discount heavily. Don't count on that dividend stream indefinitely unless the industry is absolutely rock solid. Don't count on getting 100% of that stock value at book, or fair market value, however you decide to perform those calculations.