That explains her magic mirror that talked to her. Maybe she wasn't even really rich she just use magic to get stuff and saidd it was money when people asked how she do it.
But that was witches and wizards in England maybe american wizards and witches were more careless about it. And Harry potter took place in 1991- 1998 and sweet life of zack and cody the show she first appeared in started 2005. So it definitely took after voldemort would be dead.
Witches never say Voldemort's name.
Unless this is after the books.