I suspect Anna Nicole's relatives were only trying to cozy up to her for her money.
I am reminded of the scene in "Milliion Dollar Baby" where Hilary Swank's deadbeat relatives come visit her in the nursing home and try to persuade her to sign over her money and property. I cheered when she threw them out.
Now that the latest is that Anna Nicole left everything to her son and apparently did not change her will after he died, it will pass to his next of kin--which I suppose is his grandmother Virgie.