My female budgie used to do something similar after mating where she would chase us around and attack our hands, often trying to rub her bum, for days at a time. We noticed that her abdomen was a lot larger and got her diagnosed with fatty liver disease. After a diet change and medication she was back to being her regular, half-aggressive self.
I would recommend taking your budgie for a check up and an x-ray if possible just to see whether her liver may be enlarged. If you can't do that an easier option would be to offer fresh fruit and vegetables instead of seeds as well as a mixture of AVC (apple cide vinegar) and milk thistle. Natural remedies take a bit longer to kick in though.
Goodluck with your angels!~