After Shannen Doherty didn't test well with several focus groups in the new UPN sitcom, "Love, Inc.", the network apparently asked Tiffani if she wanted the role. However she turned it down, most likely because she is tired of taking Doherty's left-overs.

Tiffani's own pilot, "Stroller Wars" wasn't picked up.

SOURCE: TV GUIDE

http://www.tvguide.com/news/askausiello/050622.asp