You never know. The internet has created a great resource for independent guerrilla-style marketing where even people like Adam Carrola have been able to relaunch a flagging career and even become innovators in the market place.Her being dropped from FN is a big blow. It was a platform that kept her in the public eye, and gave her the opportunity to promote her products. Though she keep many, or even most of her endorsements, it's going to be harder for her to get additional endorsements going into the future.
But if I was putting my money where my mouth was, the safe bet is that her best days are behind her