If a grandparent is harassing a grown-up grandchild, it can be a difficult and distressing situation for everyone involved. Harassment is a serious issue and can have long-lasting effects on the mental health and well-being of the victim.

If you or someone you know is being harassed by a grandparent, there are a number of steps that can be taken to stop the harassment and protect the victim. These include:

1. Speaking to the grandparent: If you feel safe to do so, you may want to try speaking to the grandparent and explaining how their behavior is making you feel. This can sometimes be enough to stop the harassment, especially if the grandparent is unaware of the impact of their actions.
2. Setting boundaries: It may be necessary to set clear boundaries with the grandparent, such as limiting contact or cutting off contact altogether. It is important to communicate these boundaries clearly and firmly, and to enforce them consistently.
3. Seeking a Non-Molestation Order: If the harassment continues despite setting boundaries, you may want to consider seeking a Non-Molestation Order from the court. This is a court order that prohibits the grandparent from contacting or harassing you in any way.
4. Contacting the police: If the harassment is severe or threatening, you should contact the police immediately. They can take steps to protect you and may be able to pursue criminal charges against the grandparent.

It is important to prioritize your safety and well-being in this situation, and to seek support from friends, family, or a professional if needed. A solicitor or family law specialist can provide advice and guidance on the legal options available to you, and can help you take steps to protect yourself from harassment.