In every statement she makes she says she wants to
explore all options. She always says that far more times than she mentions indyref2. When she finally gets round to mentioning indyref2, she merely says it should be
on the table. But we also know several other things are on the table, including what is being called a "reverse Greenland". IE, Scotland retains its EU membership when England and Wales leave. Scotland wouldn't be out asking to come in, but would simply not be part of the territory leaving at the end of the Article 50 procedure. 3 members of the British-Irish Council - Jersey, Guernsey & Isle of Man - are currently not part of the EU. Her preferred option, I believe, would be to arrange for Scotland to stay in the EU, while England & Wales joined Jersey, Guernsey and the Isle of Man.
So Scotland as an EU member region of a Brexit UK.
If that can't be done, for whatever reason, then other options are circulating.
Sturgeon is thought to be cautious about indyref2. It's too soon, there's voter fatigue, there's no guarantee of winning, there's no sensible correlation between a Remain vote and a future Yes vote. So indyref2 is a bargaining chip. Maybe she has to play it, but she wants to try other options first.
She will say indyref2 is "highly likely", but she does not say when.
All of this is is readable in what she's said.
Nicola Sturgeon's full European Referendum result speech