Without evidence I will say it’s more likely that she has significant funding from the fracking industry and is under the thumb of rich executives. The difference is that they likely understand that supporting fracking could cost them the election, but they know that by not supporting it they lose a huge source of funding. They have weighed the costs, benefits and risks, and decided it’s a risk worth taking.
A good solution is to get corporate money out of politics. There are narrow ways to achieve that, but a broad solution that fixes a lot of problems is to end corporate personhood. This organization has made steady progress toward that and I think is worth supporting. en.m.wikipedia.org/wiki/Move_to_Amend. Considered signing up for their email list.
Another solution is more wisely voting. People don’t vote in primary elections, but they’re more important than the general elections. They determine what the field of candidates looks like. Vote in primary elections. You don’t necessarily want to vote in primary of the party you most align with though. An obvious example where you’d vote in a different party is if you live in a gerrymandered district. There’s a near 100% chance the gerrymandered party candidate will win. It doesn’t matter who the other candidated are. Vote for the least bad candidate in the other party. You won’t get everything you want, but you’ll get more than you would otherwise. It will also force the party to change.
That’s not the only time you’d vote in a party you dont align best with. Maybe you’re relatively happy with all of the candidates in a party, so why split hairs if you’d be ok with any of them? There are so many considerations that the only advice is to keep an open mind about party membership, evaluate where you make the most impact (not what looks the most like you) and vote in every damn election, primaries included.