There is so much discussion and notes about her that I admittedly haven't processed, but just a quick glance, it 'seems' to me the connection to her husband is incorrect.
Wikipedia has her husband as: https://en.wikipedia.org/wiki/Magnus_Maximus
not https://en.wikipedia.org/wiki/Maxentius
She isn't even mentioned as a mistress or in any way on the Wikipedia page for Mexentius but is listed as the traditionally-known wife of Magnus Maximus.
Any clarification would be appreciated.
Thanks in advance.