First of all you need to make an appointment with an Avian vet in your area to have her checked out for any infections, parasites or injuries that have gone unnoticed.
There may be a reason she keeps making these sounds, and your first job is to take her to an Avian vet and make sure she is healthy.
Her diet also needs to be looked at. If she is on an all seed diet, this must be changed to a pelleted diet like Harrison's which is made using only organic ingredients and provides a very wholesome source of proteins, fats, vitamins and minerals she needs to be healthy and stay that way. Tracie carries the Harrisons out here as well as their Birdy Bread mix made using the organic red palm oil, Sunshine Factor also out here. It will help the changeover from seeds to pellets which takes a little time depending on how long she has eaten the seeds. While feeding the Harrisons, the only veggies she will need as treats are the dark leafy lettuce(no spinich), dark yellow and orange like squash and baked sweet potato. Make sure your veggies are organic as pesticide residue is a danger with veggies bought in grocery stores or at least it is in the US.
After the vet checks her out and treats any problems found, you can check out some training information on this site. The sound she is making sounds like she is happy to be out of her cage and that she really loves you all. She needs lots of time outside her cage and safe toys to play with in and out of cage. Make sure she is ALWAYS supervised when outside her cage, and don't leave her alone with any other pets in the room or other birds out of their cages. Basically, she needs plenty of playtime out of cage, and needs plenty of rest, approximately 12 hours of darkness and about the same of light. A light cover for her cage will ensure she gets enough rest. If her cage is in a busy area where you stay up late at night, it will need to be moved to another area where she can go to bed around 9pm for a sound, restful sleep.You could also have a cage for the front room and one as her sleep cage. Take time to get her used to second cage before leaving her in it at night. She'll quickly begin to understand that she is being put to bed like you would do any child. Your bird has intelligence and emotional development of a 4-5 year old child, and children need their rest too.
There are other training resources on the internet, and I'd try the ones Tracie has on her Parrot Training page first to make it easier. Don't do any training until she has been to the Avian vet as sick birds cannot learn new things.
