Anyone who has seen Gracie, or knows where she is, should call the police on 101, quoting incident number 727 of 6 April.

What should you do if someone goes missing?
If you think you’ve seen a missing person, it’s best to report it either to the police or the charity Missing People. You can check for active appeals on their website, though not all missing persons are listed there — some may only be publicized through police announcements or social media.
If you prefer to report information anonymously, Missing People can pass it on to the police on your behalf. But in urgent cases, contacting the police directly is often faster and more effective.
Keep in mind: if you can’t find a person on any missing persons list or posts, they may not officially be reported as missing yet.
Source: Missing People