The sister-in-law made the relationship between the siblings very tense.

If your sister-in-law makes the relationship between your siblings very tense, it may mean that there are some problems or misunderstandings between them. Here are some possible solutions:

1. Understand the situation: First, try to understand the specific reasons for the tension in the relationship. It may be due to some misunderstanding or something not communicated well. You can talk to your sister-in-law and ask her what she thinks about the situation and how she thinks it should be resolved.

2. Communication: Effective communication is the key to solving any problem. During the conversation, you need to express your concerns about the current situation and look for different solutions. Try to avoid blaming or criticizing, and instead approach solutions with a positive attitude.

3. Act as a mediator: If the problem is due to misunderstanding or miscommunication, you can try to act as a mediator between your sister-in-law and your brother and help them reconnect. You can organize some family activities or gatherings to create a relatively relaxed environment for your sister-in-law and brother, giving them a chance to re-establish their relationship.

4. Respect each other: The most important thing is to respect each other’s feelings and opinions. Try to avoid causing unnecessary conflicts and contradictions in the family. If the problem is more complex, you may need to seek professional help, such as family counseling or a psychologist.

In short, family relationships are based on mutual understanding and respect. If an impasse has developed, you need to take proactive steps to resolve the issue in order to maintain family harmony.