(Sorry, i'm a bit late.) First off, I want to say I’m really sorry you’re dealing with this. What you described sounds frustrating and unfair, and no one should feel like they’re being treated differently or like their basic needs aren’t important.
From what you’ve said, it seems like your stepmom is being really strict and not very considerate of your feelings. It’s important to know that everyone deserves access to things like safe food and water. If you’re feeling like this is part of a bigger pattern of being treated unfairly or neglected, it’s worth reaching out to a trusted adult for help—maybe a teacher, school counselor, or another family member.
It’s not okay to feel singled out or ignored, and your feelings matter. If you’re unsure if this counts as abuse, you could talk to someone about it—people like counselors or even helplines can help figure out what’s going on and what steps to take next.
You deserve to feel safe, respected, and cared for. Keep speaking up, and don’t be afraid to ask for help. You’re not alone in this!