I vote no. Inviting her I think would change the whole tone and atmosphere of the party - for you and, therefore, for your guests as well. GAl is get a life of your own, on your own.
$.02 from a thus far no-results DBer
Gardener
"My soul, be satisfied with flowers, With fruit, with weeds even; but gather them In the one garden you may call your own." Cyrano deBergerac