I've been trying for days. I think you have to birdie every hole!

Well, she's not that difficult. If you're having trouble with the temptress, then you're definitely going to be having difficulty as the game progresses.
Be sure to check one thing, though. When you start a match, make sure to NOT take the 3 to one odds. That activates tour difficulty mode and makes things considerably more difficult. You can't spin out of the rough or traps, and you don't get any caddy tips.

Other than that, you probably should be hitting a birdy or an eagle on every hole anyway. During the regular season you should pretty consistently be coming in at least 18 under par for 18 holes. Maybe all you need is a little more practice.

I was having the same problem. Like DreamerRLF says, the key is "practice". Go into Game Modes, Stroke Play. Play the various courses, and use the money you win to upgrade your attributes (power, accuracy, etc.) It takes a while, but eventually the birdies start flying.

I can't beat her either. It's complete crap; she routinely chips in from 30 yards and out. She rarely is not right down the fairway and I have a ton of points/attributes.

You just have to keep trying. It is very tough but eventually you can beat her. I never actually had a problem with it and I beat it right away.

I managed to beat her straight away to, just keetrying and stay calm when your playing. Thats probably the best things i can say to help you.

quote Arvin5

I managed to beat her straight away to, just keetrying and stay calm when your playing. Thats probably the best things i can say to help you.

I have had the game for about 3-4 months now and my character is maxed out at 110% and I STILL can't beat her in the legend scenario "comeback challenge". It totally ruins the game. I have beat all of the legends and can't finish a freakin' scenario worth a measely $15,000 dollars and 15 legend coins!? Not to mention, I can't continue my Tour with caddy tips on without beating her. Totally wasted the game. I'm right now getting ready to leave and buy '06. It's a much better game and a lot less crap[b][/b]

Try to buy better equipment like socks, grips etc. which will increase yout attributes too. And Practise!!