I agree with Kikya, your sister does appear to be manipulative. But there's a reason behind this, and that's why I'm adding my thoughts into this.
Your sister has very intense emotions. And a very busy brain. Imagine her brain like many spools of thread. These many spools are connected by only one long piece of thread - her thought stream. The spools are topics of thought. One of these spools, schoolwork, has only one loop of thread around it. Whereas another, love and attention from your mom, has a whole tangled mess of thread around it. Or you can imagine her brain as a torch/flashlight. Only the topic of love and attention from your mom is lit up by this flashlight.
Younger children have trouble with perspective, and they tend to only take themselves into consideration. Our brains are very manipulative, and can make things seem worse than they are. This isn't just common in children, many teenagers and even adults go through this from time to time. It's just that most teenagers and adults are more skilled in controlling their emotions and shifting perspective. If you think carefully we've all been in the situation before without realising it. Have you ever felt extremely upset about something, and then a day later it doesn't bother you at all? For example, you got 81% in a math test, which was the worst in your class. You feel really upset that you got the worst in the class, at the time. But then a few hours later you shift your perspective and realise that you got over 80%, which is what you needed. It's not only shifting perspective with other people, but you also need to learn at a young age to shift perspective on how you look at things. Now about people; If you put lots of effort into a subject, but the teacher doesn't recognise this effort and goes to praise your schoolmate who didn't try so hard, you'll end up not liking the teacher. However, it might just be because the teacher is stressed and tired, with so many students in the classroom they can't focus on everyone individually. We just shifted the perspective. Perhaps you might feel less angry about the situation, and you possibly feel empathy for the teacher.
Now that we've learned a bit about the brain, how is this linked to your sister? Your sister is extremely wound up on one thought of her mom hating her. There might have been a slight pointer that set off the trigger, but her brain has manipulated her into thinking it's a lot worse than it truly is. Everything is so tangled she's having real difficulty shifting her perspective, causing her to blame everything on your mom. All of this chaos occurring in her brain is causing her emotional system to get so overwhelmed that it 'explodes', causing these intense tantrums and bad behaviour. Your mom scolding her is only feeding her anger, so the tantrums will last longer and get more intense. It’s also ‘evidence’ for her brain to think her mom doesn’t love her.
So now we know all this, what do we do next? It’s got to the stage where it will be difficult and will take a while to completely sort things out, but it still can happen. This is probably really challenging for your mom too, so we need to find a way that benefits both of them. Next time your sister is throwing a tantrum or behaving badly, ask your mom not to say anything. To step away and let the emotions cool down by themselves. Next time your sister refuses to eat something, let her calm down first before solving the problem. Then she’ll be in a better situation to accept new ideas. If she agrees to even having a tiny nibble, praise her. Ask your mom to spend more time with her. They can read a book together, draw a picture. If they argue, step in and be the person to remind them to take time from each other. Ask her to do 10 minutes schoolwork at a time, with short breaks in-between. Make cleaning the cage something fun, instead of a chore. Turn it into a game. Positive reinforcement is key, but balance it with firmness too. You need to teach her to be respectful, and shift perspective. But you must do the same. Remind her about how your mom is feeling, but don't act as if you're all above her. Act as if she's equally as important in the family. Invite her to do things with you instead of telling her. Invite her to clean the cage. Therefore she'll feel more welcomed, and the positive emotions will help balance her thoughts.
I’m so sorry for the essay, and the waffling, but I hope it helps!
Edited by Iszie, 23 November 2021 - 11:42 PM.