Alexandrine 3 months old

[Cookies mum]

I have had my cookie for 2 weeks she lets me touch anything in her cage except her. She eats well and will occasionally take a bean or walnut from my hand. My issue is there are 2 camps on letting your bird out even if they are not trained or keep them in the cage till they are ready. I am spending time with her but if she needs out of the cage we have to do it in the bird room as my cat gets in even with blocking that area off. I need to do some target training done so when she is out i can get her back in as my hands are evil so advice please