M G,
You don't have to wrap your brain around it. After 30 years of marriage, if one spouse makes a lot more then the other, there is property to be settled, and they can't seem to agree; the judge can order the property be sold and assets are split 50% - 50%.
If alimony is in order, the judge will so order. (Your friend needs to ask for what she wants and hopefully she won't say---I don't want anything extra--forget about that)!
If your friend’s attorney isn't properly representing her, perhaps she needs a second opinion.
She should however, be very careful, because attorney's can be sort of, "vultures" and the two attorneys may be playing both ends against the middle while laughing over double martini's! Your friend needs to be sure her attorney is not her husbands attorney’s golf partner.
Blessings….