In a modern set up outside Africa, particularly in the western world where you have to do everything yourself, the husband, like Serena’s husband was doing here, has no other choice.
In Africa, there are other family members that will do the job that Serena’s husband was doing here while the wife is doing her trade that will fetch the family good money.
Princess Ife, you may be right if there are no other family members around and you cannot afford to hire a maid.