Actually, from recent reports I've seen, it seems it's Smith trying to save her own butt because much of her party wants this and is at risk of splitting up if they don't get their way.

She's said a referendum would be an "outlet" to let them feel heard, but she's obviously playing with fire. (Fwiw, Smith says she isn't for secession herself, but take that as you will.) If she was responsible and cared at all about her province and country, she'd be trying to put that fire out (aiming for a unity moment), rather than fanning the flames.