Small family business grossing over 500k/year

Mother has a small business for the past 15 years that grosses over 500k/year. She still works every day in what she feels to be a stressful environment. She feels the need to be present for "quality control". Shes brought up concerns lately that she is feeling the want to look towards retirement but knows my sister and her family is completely dependent on her income with no signs of anything changing. The business has not grown in the 15 years and never have pursued more work.

I live and work in NYC but have tried going through her finances over the past few months. (I'm not an accountant) Snapshot of what I have found.

Business has contracted around:

Gross- 500k/year + "extra jobs" maybe $100k/year
Overhead - $20k /year
Labor- $150k /year + "25% of any extra jobs"
Salaries- $350k /year

$218k/year to her...which goes towards her personal expenses and investment properties she owns

$130k/year to my sister. House, cars, kids schools, + salary all from the business. She's married, 5 kids, Husband doesn't work, sometimes as a "contractor" for my mother, but hasn't been the best source. She is supposed to be the bookkeeper but has never done much beyond for submitting invoices and payroll.

Profit: ($-25k) /year (without extras)

basically her rental properties and any profit from the "extra jobs" is what keeps her at float.

She just bought my sister's oldest child, 15, a 2019 JK Sahara.



What's your advise?