Is it common for a younger sibling to emotionally abuse an older sibling?

Is it normal for me to have believed my sister? This all started in 3rd grade I believe, but am not completely sure whether the abuse actually started earlier than that. My personality switched from extroverted to extremely introverted between kindergarten and 1st grade. I am still a bit gullible sometimes, but am getting better at telling when people are lying or teasing (I also don't feel bad when they do anymore and just act innocent and slightly cutesy to handle the awkwardness/embarrassment of being fooled - these are random people btw and not people that I have more than one conversation with). I haven't developed the best way to deal with that type of interaction yet. To give more detail, each person would intentionally tell me that I could not do something when asking for permission, and I question them asking "really?" while they have fun leaving me hanging with the answer. I don't know if this is something that happens to everyone or not, or if I am just misunderstanding something obvious. Anyway, this was a bit of a tangent. I originally was wondering about the sibling abuse, but then thought that my gullibility could have caused me to be an easy target.

My younger sister also emotionally abused me, so i feel for you. It was horrible. I don,t know how common it is, but you don't hear about it much, do you? I'm with you though. Hope you can find some healing through therapy.

Siblings saying mean things to/about us is not abuse. Siblings do not have any say over our lives, our parents did. Your mother joining in with what your sister is saying is being emotionally abusive because she is an adult you relied on for all your support, or she is being neglectful to both you and your sister by not stepping in and rebuking your sister and teaching your sister better.

What was to believe? Your sister saying you were overweight when you were is mean but not untrue? What you made of it though is internal to you. Some siblings would have retaliated, some denied, some gone inward; like you and I did, since our parents did not support us emotionally and help us learn good self respect at that time. Whether or not you have friends or believe individuals like or dislike you is between you and those individuals. You decided your sister "knew" about these things so just accepted her word without checking it out with your own senses; talking to the people you wanted to have as friends and seeing if they would be your friend.

Hopefully a therapist can help you soon with these issues!

I definitely think it was indeed my mom's fault, but I felt guilty when I was younger. I think my sister truly hated me because of my mom burning her for something that I did wrong. I verified with her recently that she really did blame me for it. It also didn't help that my mom praised me in front of my sister, but only when I wasn't there. She also praised my sister in front of me when my sister wasn't there. She put us against each other.

By the way, my sister was a bully to me and told lies to people at school about me bullying her... so if that isn't abuse... She even convinced me that family members hated me, so I didn't get to have relationships with them. She was vindictive and manipulative. Just because she was that way because of our mother does not mean that she did not abuse anyone. My younger sister had it worse... she physically abused her... sent her to the emergency room once... so. Saying that she isn't responsible for abuse is like saying that a narcissist isn't responsible for manipulating and abusing their children because their own parents made them that way.