As it stands the Tories are currently playing into the pro-indepndence hands.
Lots of loose talk about lists of foreigners, hardline control over immigration, clammy palmed and weird obsession with expelling foreign students, hard Brexits, and so on will play badly with many formerly diehard No voters. Sure, voters will wait to see what the latest independence prospectus is, and how it matches against the new extreme-right normal south of the border.
No won last time because it played the uncertainty and currency union cards again and again and again, and built a loose coalition of opportunist shitebags ( a.k.a. the "I'm alright Jack / What's in it for me and mine? demographic) and old folk worried about their pensions.
Those cards (uncertainty- we have it in spades now and its not pleasant) and currency union (with a pound tanking badly and being bet against on the global markets) can't be played in round two. Only misty eyed appeals to a common future now as remote as the Battle of Britain remain.
However, Sturgeon is playing a careful hand. She has said enough to encourage the fundamnetalist wing of the grassroots membership, people who, let's be honest, haven't another political idea in their head other than Scottish independence for its own sake. They are a much smaller minority in the SNP than was the case 20-25 years ago. Secondly, she has animated the more pragmatically minded, who are already generating terabytes of data on alternative media about what a second referendum campaingn might look like.
But Sturgeon also, even though she can't publically say it, would accept some strange UK-specific deal that lets Scotland's EU membership /access to the single market continue, whilst also remaining part of the UK. This sort of strange post-Brexit devo-max is, I suspect, her preferred option. The numbers on support for independence still don't add up, even if they are moving very slowly in the right direction, and do so with every Farage-lite utterance from the PM.
The trouble for this strategy? EU opinion is hardening and they will quite happily make Scotland a casualty to inflict the maximum punishment on the UK as a whole, taking what Tusk and Hollande have said this week. The voices of German car manufacturers are fading. In these circumstances, a second independence referendum- if a "special status" for Scotland is shot down by hardline EU negotiators- is inevitable. A queston of when, rather than if.
Lots in play and far too complex for the 24h news media to grasp fully /cover properly.