Trying to save some jobs!

I'm not sure this is the right forum for this, if not please move it where it should be. I have friends that have a lawn care/landscaping business. Lets call them Dick and Jane. Dick started the company some 20+ years ago as a hobby kind of thing to keep himself busy, Dick and Jane are loaded and don't have to work. Dick had four people plus himself working there. Dick did the jobbing, two did grass cutting/edging/ect. Two did tree trimming/planting/beds/ect. Dick had some good people working for him that did good honest work, all have families/kids/grandkids. Dick good cancer and died a few months ago. Jane wants to keep the business going. Now here is the problem, Jane has a kid that is mean, disrespectful (just a real piece of work). Jane thought it would be a good idea to let the kid run things, the kid knows nothing about jobbing/pricing and how to talk to the people that work there. Two quit so far and one is looking for work some where else. None want to leave but can't work for the a-hole kid. Jane wants to keep the business going so the people that have been there have a job, but can't see that her kid is no good. Here is the question, should Jane just sell the business/equipment or fire her kid and get someone that knows the business and keep the people that have worked there for years working? I know what I would do but would like to get thoughts from other people. Thank You for your thoughts.