Seems I've been referring to old archive fics lately.
Two fics which cover most of the points you've outlined:
Lynn M, Butterfly Legacy, and Demi's Heaven's Prisoners. But neither contains the girl-brawl bit you want, and Demi's doesn't have Lois and Luther togther but instead it begins with L & C divorced.
If you just want to stick with Lois and Luthor married - there are several out there: Sheila Harper, Wendy, Helene have each written one. So have a few others and I apologize for not mentioning them.
But am, er, wondering if maybe you haven't confused the character of Lois Lane with Paris Hilton?
c.