Wilkinson put the Rangers ahead of the first 10 minutes at the K Park Stadium, looking at his heading home after an intelligent delivery of Lizzie Arnot.
Wilkinson continued to investigate and approached a second when he hit the crossbar, with an effort by Kirsty Howat also approaching.
Motherwell almost found a late draw through Lucy Barclay, but the carrier of the Rangers, Jenna Figfe, got well to maintain her team’s leadership.
The city of Glasgow fell to second place when the Hearts kept them with golfs in Oriam, with the remaining third parties.
Emma Brownlie and Bayley Hutchinson approached the side of Eva Olid and Jackie Richards was close to turning in a late cross.
Leanne Ross thought that her team had taken the lead, but the end of Nicole Kozlova was discarded for a handball by Katie Lockwood when the ball made her way through the goal.
Both parties lacked the decisive quality in the final third, despite the sustained periods of attack possession.
Otherwise, Partick Thistle was based on Spartans in Petershill Park in another fiercely played game.
Hannah Jordan put visitors ahead in the opening stages before Carla Boyce was leveled by Thistle before the interval.
The hosts obtained nine shots in Target, but Jack Beesley’s team remained resolved when the game ended the level.
