AITA for putting child-proof locks on the stove to stop my adult sister from using it?
A 19-year-old college student, living with her 20-year-old stepsister Nicole in a shared apartment, installed child-proof locks on the stove and oven after Nicole repeatedly forgot to turn them off, nearly causing two house fires. Despite reminders and sticky notes, Nicole dismissed the concerns and became angry when confronted, prompting the drastic safety measure. Nicole reacted furiously, calling her a control freak and leaving for a friend’s place, while their parents urged reconciliation. The woman wonders if she’s wrong for prioritizing safety over her sister’s autonomy.
This fiery roommate dispute has ignited a passionate online debate, with most supporting the woman’s safety concerns and criticizing Nicole’s recklessness. Was she wrong to child-proof the stove? Let’s dive into the story, the sisterly dynamics, and the community’s perspective.

‘AITA for putting child-proof locks on the stove to stop my adult sister from using it?’
The conflict arose from shared living arrangements:


Nicole’s dangerous cooking habits emerged:


Efforts to address the issue failed:



The child-proof locks were a last resort:



Nicole’s reaction escalated the conflict:


This situation underscores the tension between ensuring safety and respecting a roommate’s autonomy, particularly in a shared living space with family. The woman’s decision to install child-proof locks on the stove is a reasonable response to Nicole’s dangerous behavior, as two near-fire incidents pose a serious threat to their safety and property. Nicole’s dismissal of the issue and refusal to engage in constructive dialogue left few options, and the locks, while unconventional, address the immediate risk when the woman is not home to supervise.
Psychologist Dr. Robert Firestone notes, “In shared living, safety concerns must override individual preferences when life-threatening risks are involved” (The Self Under Siege, 2012). While the locks may feel condescending, they were a last resort after gentler methods (reminders, sticky notes) failed. Nicole’s extreme reaction and refusal to acknowledge the danger suggest deeper issues, possibly inattention or denial, which could benefit from professional evaluation, as some Redditors speculated about ADHD or other conditions. The woman’s approach could have been softened by discussing the locks beforehand, framing them as a temporary safety measure until Nicole demonstrates responsibility.
Moving forward, the woman should reach out to Nicole (possibly through their parents) to apologize for the delivery but reaffirm the safety concerns, proposing a plan for Nicole to regain stove access by proving she can turn it off consistently. Exploring alternative living arrangements or involving a mediator (like a counselor) could prevent further escalation. Your past discussions about setting boundaries, like refusing to cover others’ responsibilities or managing risky behaviors, suggest you value safety, so prioritizing it here while seeking reconciliation aligns with that.
Take a look at the comments from fellow users:
The Reddit community overwhelmingly labeled the woman NTA, praising her for prioritizing safety and criticizing Nicole’s reckless behavior, with some suggesting moving out or seeking professional help for Nicole.
Many supported the safety measure:








Others emphasized the danger of fires:







![[Reddit User] − NTA she nearly Burnt the apartment down twice and doesn’t even seem fazed](https://en.aubtu.biz/wp-content/uploads/2025/10/wp-editor-1761299246520-8.webp)
Some suggested Nicole needs help:




Others recommended alternative solutions:






Some highlighted Nicole’s irresponsibility:


The woman’s decision to install child-proof locks on the stove was widely supported by the Reddit community, who labeled her NTA for prioritizing safety after her stepsister’s reckless behavior nearly caused two fires.
They criticized Nicole’s irresponsibility and suggested professional help or a new roommate, urging the woman to stand firm. What do you think? Was she wrong to child-proof the stove, or was her safety measure justified? Share your thoughts!
