As a failed candidate she'd attract little interest and less attention in that role. And she isn't VP material.
She is still a woman, and what she says, especially against Hillary would make the news.
I can see her being a guest on new shows and helping to motivate voters to get out and support the eventual GOP nominee.
It would be nice for once if all the GOP folks in DC would get off their @sses and try to help the GOP nominee win, for once, and trash the Dems.