Just take it nice and slowly. Alfie always takes a little while to adapt to new things. Especially big scary play stands. It takes time and patience before he'll go anywhere near it, let alone put a foot on it. Don't try and force her on there, as it'll make it even scarier and the process will take even longer.
If it's in view of her cage as soon as you get her home, it will be a bit easier, as she'll be able to observe it from a distance before trying it out.