Maybe I'm not understanding properly, you can put me right though!
Her current daily diet is:
Veg in the morning
Mash or sweetcorn in evening (you mean mashed potato or a parrot mash with lots of different things?)
A little fruit and the occasional nut
If this is all she is getting it doesn't seem like a lot to me. She definitely will be needing pulses/sprouts etc or pellets so its good you ordered some pellets

You can't overfeed them on pellets, I think most people leave pellets in the cage at all times - how many they will eat depends on how much other stuff they are getting really. Flint eats about a dessertspoonful a day plus some that I add to his evening meal

Tidy mix is a good quality seed for her to forage for
