if she decides to run as a conservative, and does it with conviction, then she can win some of these red states that everybody thinks are not in play - but she will probably destroy the democratic party's ability to appeal to the left for a generation or longer. is that already accomplished, anyways? i don't think she'll split the left in any meaningful way, because she'll cut too far into the right; if she loses 10% on her left, she'll gain 15% on the center-right. shouldn't tennessee be in play? kentucky? arkansas? that was her husband's map...
if she decides to run on the left, she'll have to concede some space on the right but with the aim of preventing a split. she'd be looking to emulate the obama map.
if i was working on her campaign, i would be a nihilist. i would be solely interested in power and reject ideology as simplistic modernist naivete. so, i would see these options as equally acceptable and judge them solely on their likelihood of success.
i would conclude she should run on the right, in an attempt to take advantage of conservative disillusionment with trump. she can offer a more credible conservative vision than he can. that's a big vacuum with a big reward. while she may lose support on her left, it is so unlikely to migrate to trump that it is not worth worrying about.
if she tries to hug the center, she will be unanimously rejected and lose.
http://thehill.com/homenews/campaign/285110-polls-show-tight-clinton-trump-race-in-2016-battlegrounds