"We wanted to mark the occasion and contacted principal Chris Dibben to arrange it without her knowing about it," said Mullholland. "We thought she deserved a bouquet or two."
Lance says one of the joys of working at the school for 20 years is bumping into former pupils who are now grown up.
"They remember stories they read with me and they will say ' I see you still wear your pink lippy'.
"I get so much pleasure from that and from the children I'm reading to now."
Dibben said children had always responded well to Lance and she was already a regular volunteer when he became principal 19 years ago.
"The poster out front says it all really.
"Sue's ability to relate to the kids makes her such a valued supporter and we really appreciate her."
Lance plans to continue her weekly visits and wearing her trademark lipstick.
"Building happy one-on-one relationships with children and having fun is what keeps me coming back."