@nixCraft .. I left it the "Industry Standard Two Days" before calling her, as I didn't want to seem too keen (despite being quite keen).
She picked up and said, "Who?". Good start. She had told her mum the day before, "If someone called Alan calls, I don't live here". She never usually gave out her number and was worried.
Thankfully, I gave it two days, and she picked up. That was October 1997. Been married since August 2000.