I have a female cockatiel who is a year and a half old named Billie. She has been my best friend ever since we met and she snuggles with me and gives me kisses consistently. But lately she has had moody periods in which I just clean her cage and leave her alone. But this has been lasting awhile and she has injured me quite a few times and I’m getting genuinely lost and upset. I haven’t moved her cage or changed my schedule recently and I have been watching to make sure that she isn’t sick. What can I do?