"But I couldn't stop thinking about it. I was in Wanaka and I thought if I'm going to do it, I have to do it now because if Nadal wins, the prices are going to go crazy and then I can't afford it anymore.''
With her mind made up, van Rheenen purchased a flight and a ticket to sit at the big final - costing her more than $2000 in total.
Despite the high cost, a Federer-Nadal match was something she had always wanted to see.
"It is a lot of money. But for me, I thought: 'I'm never going to get this chance again'.
"This is probably their last Grand Slam final against each other and for me, it was literally my number one bucket-list item - a Federer-Nadal match - and I was only a three-hour flight away," she said.
"Already after the first set, I sent a message to my family: 'It's already worth the money'.
"I already forgot about the money.
"This was, hands down, the best day of my life.''