I’m going to be honest with you because it sounds like someone needs to be.
The way you’re speaking about your daughter here is incredibly harsh, and it’s worrying.
You’re describing a child who is nearly 13, a child whose brain is in the middle of one of the biggest neurological, hormonal, emotional, and cognitive upheavals of their entire life. Teenagers often forget things, get overwhelmed, shut down, struggle with organisation, and need instructions broken down. That’s developmentally normal.
What isn’t normal or fair is an adult mocking her, comparing her to a 6-year-old, or describing her as “useless”, “brain switched off”, “head up her backside”, or implying she lacks intelligence. That kind of language chips away at self-esteem, confidence and trust. If she is struggling, comments like these won’t help, they’ll make her feel ashamed and even more stuck.
You say she forgets homework, routines, instructions, schedules…. has difficulty planning, organising, processing information, and needs support breaking tasks down. Those are all signs of executive functioning challenges. Lots of teens experience them, and for some, it’s a sign of ADHD, autism, anxiety, overwhelm, even abuse, or simply hitting puberty like a train.
Instead of assuming she’s lazy or “regressed”, it might be worth asking why she feels so overloaded. Is she anxious? Is school demanding too much too fast? Is she masking? Is she struggling with executive functioning? Are hormones affecting concentration and working memory? These are genuine possibilities.
What she needs is guidance, patience, scaffolding, and understanding, not ridicule.
You clearly care deeply about her, but the frustration is pouring out as contempt rather than support. Speaking about your child this way isn’t fair on her, and it also isn’t going to get you the help or change you want.
Try stepping back and seeing her as a young person who’s overwhelmed, not a mini-adult who should automatically function like one.
Compassion will get you far more progress than criticism ever will.