Final answer:
Chelsea should seek immediate medical attention for her grandmother by calling emergency services for severe symptoms or contact her doctor for non-life-threatening but worrying conditions. Acting fast is crucial.
Step-by-step explanation:
Without more context, it is difficult to provide a specific answer to what is happening to Chelsea's grandmother. The question suggests there may be a health emergency or concern. In any situation where someone's health or well-being is at risk, the best course of action is to seek immediate medical attention. Chelsea should call emergency services (such as 911 in the United States) if her grandmother is experiencing severe symptoms or distress. If the situation is not life-threatening but still worrying, she should contact her grandmother's primary healthcare provider or take her to see a doctor as soon as possible. Acting fast in medical situations can often make a significant difference in outcomes.