If your sibling says they should get more of an inheritance because they “need it more,” you generally do not have to agree just because they asked. What matters first is the estate plan, meaning the will, trust, beneficiary designations, and any other legally controlling documents. If a valid will or trust says assets are split equally, that instruction usually controls unless all affected parties voluntarily agree to change course. Family pressure may feel powerful, but it is not the same thing as a legal obligation.