If that fails, she will take the second Challenge Tour, all with the goal of returning to Alexandra Palace next year.
Dobie admitted he was rattled by Sherrock's impressive finishing power, as she took advantage of his failure to hit his doubles early in the match.
Dobey hauled himself back into contention, only to miss three successive double attempts as Sherrock sealed the set.
"I've enjoyed myself so much", said Sherrock. "I'm really grateful for the opportunity and I hope I can carry on where I left off in the World Championship".
"I have helped darts in general I think there's people now who didn't watch darts but want to watch it".
Fallon Sherrock: 'I've just proved you wrong!'
Tom Brady's record against the Buffalo Bills is ridiculous
Buoyed by two consecutive three-and-outs, the Patriots came back with a field goal and Rex Burkhead touchdown to regain the lead. The New England Patriots beat the Buffalo Bills on Sunday to retain their AFC East title for the umpteenth time in a row.
Sherrock's achievements have made her the breakout star of these championships, regardless of what happens in the rest of the tournament.
"The last week or so has been incredible for me and the reaction I've received from around the world has been insane - I've loved every minute of it and I couldn't have asked for anything more". "Her finishes were phenomenal - I felt a bit jealous, to be honest".
She also received an invitation to play in next year's US Darts Masters - part of the World Series of Darts - at Madison Square Garden in NY next June.
Sherrock continued: "I did see some when in the practice room". "Being included only in the US Darts Masters was surprising enough, but now being able to go to everyone is something I could only dream of".
Dobey continues in Ally Pally to play Glen Durrant in the last 16 of the PDC World Darts Championship tomorrow (Saturday, December 28) at night.
Fallon Sherrock and Mensur Suljovic in action during day nine of the William Hill World Championships at Alexandra Palace, London.