A witness cannot drop charges. It doens't work like that in the UK.
What type of case is this?
She's not going to drop charges then.
Dropping charges is a myth. Witnesses can do two things to avoid a prosecution. The first is to say they've lied. If they do that they can be charged with perverting the course of justice and she is not going to do that. the second is to say they don't want to go to court. That doesn't always work and anyway, a police officer is not going to do that.
It might be that CPS will not charge it but I wouldn't rely on it in the current climate. That doesn't mean you'll be convicted though.
If they are taking no further then sometimes they will tell you there is no need to attend on the bail date.
DISCLAIMER: Answers from Experts on JustAnswer are not substitutes for the advice of an attorney. JustAnswer is a public forum and questions and responses are not private or confidential or protected by the attorney-client privilege. The Expert above is not your attorney, and the response above is not legal advice. You should not read this response to propose specific action or address specific circumstances, but only to give you a sense of general principles of law that might affect the situation you describe. Application of these general principles to particular circumstances must be done by a lawyer who has spoken with you in confidence, learned all relevant information, and explored various options. Before acting on these general principles, you should hire a lawyer licensed to practice law in the jurisdiction to which your question pertains.
The responses above are from individual Experts, not JustAnswer. The site and services are provided “as is”. To view the verified credential of an Expert, click on the “Verified” symbol in the Expert’s profile. This site is not for emergency questions which should be directed immediately by telephone or in-person to qualified professionals. Please carefully read the Terms of Service (last updated February 8, 2012).