Big brother is watching you.

It's not quite the totalitarian state of George Orwell's devising but Kylie Walker is more than happy to have her own big brother surveying her every golfing move in his role as caddie. Sibling rivalry, it seems, has blossomed into a profitable alliance. "We didn't get on at all when I was young," suggested Kylie of those bickering, hair-tugging, toy-stealing days with older brother, Kris. "I was four years younger and so I was just the wee spoiled brat. He did not like me at all."

The Walker weans have grown up, of course. On golf's hit parade, this Glasgow sister and brother double act have reached the kind of high notes not seen since The Carpenters were in their pomp. Why do birdies suddenly appear anyone? Feel free to groan, folks.

This weekend, they are in Amsterdam for the defence of Walker's Deloitte Ladies Open title. That success last summer, achieved in a three-way play-off, was her first on the European circuit. A few weeks later, the 28-year-old would be savouring another triumph in a sudden-death shoot-out when she held her nerve against rising English star Charley Hull to win the German Open.

"Since I got to about 18-years-old, Kris and I have got on great," added Walker on these golfing family ties that stretch back to her amateur days. "The player-caddie relationship is not going to last forever, but it's brilliant for now. He can say things to me that others might not do, and he won't take any rubbish either. He's still the big brother at the end of the day. He won't take any diva moments on the course.

"He actually still works. He's a lawyer and lives and works in Dubai, but in recent years he's gone freelance, so he's been able to do all his work on the road. He manages to attend meetings around my schedule which is brilliant."

Returning to a place where success has been achieved in the past always stirs the senses and Walker is relishing the prospect of being the player everybody wants to dunt off the throne in Amsterdam. "It will be the first time in a tour event that I will be playing as a defending champion so that is exciting," she said. "I do enjoy being in the spotlight and it is confirmation on where I stand in the game."

As well as achieving her brace of European titles in play-offs, Walker also secured a place in next month's US Open recently in another extra-hole showdown. The resolute Scot clearly revels in these pressurised situations. "I really just feel excitement in those moments," she added. "Although you've got the butterflies going, I don't have a feeling of dread. I'm not worried about losing it, I'm just trying to go and win it. I don't feel uncomfortable at all."

Given that she thrives in the nerve-jangling scenarios and prospers when she is going head-to-head with a title rival in a play-off, it would seem Walker would fit quite nicely into the cut-and-thrust combat of the Solheim Cup arena. Walker is currently ninth on the European points list, with the top-four at the qualifying cut-off gaining automatic entry into Carin Koch's team for the defence of the cup against the USA in Germany later this year. "I would love to make the team this year," said the former Scottish women's amateur No 1. "I guess a play-off is kind of like matchplay. The last time I played matchplay was at amateur level, which is just over five years ago. But I did always enjoy playing Home Internationals and other amateur matchplay events.

"I'm sitting ninth on the rankings, so I think I'd definitely have to get up to probably fifth to have a shout of a pick maybe. But I think I'm definitely in the mix. The Scottish and British Opens coming up will be very important, but I feel if I'm really well prepared for Dundonald and Turnberry and hopefully a couple of good results might do it. But I really do need a good couple of months ahead of me to have Carin Koch look at me."