The attorney-general, Dominic Grieve QC, has been asked to provide legal advice to ensure the case can go ahead.
Her husband, Mr Clooney, is set to join her on the trip, to ensure the case gets maximum publicity.
Downey's legal team used one of the letters, sent to him in error, to ensure the case against him collapsed at the Old Bailey last Tuesday.
In an e-mail Sunday morning, Jane Heaphy, the PTA co-president, encouraged parents to attend the hearing Monday, to ensure the case not be "swept under the carpet".
The company then claimed £200,000 in damages, a level that ensured the case would be heard in the high court, before reducing the claim to £50,000 and then withdrawing it on Monday.
Mr Justice Morgan ordered on Monday that the hearing should be conducted in private to ensure the case did not bring news of his identity to a wider audience.
But the "airbrushing" from a police statement of anti-drugs comments made by the former N-Dubz singer while she was being driven home after meeting the undercover reporter ensured the case against her collapsed.
Once charges were pending, both sides should have worked together to ensure the case did not undermine vastly improved, but still occasionally testy, relations between the two countries.
"The recommendations made in this study - which are underpinned by detailed evidence on problems and opportunities - will help ensure the case is made for improvements in the Borders," he added.
The Ronin takes one hour from start to finish and requires a number of very specific steps and quality assurance tests that are performed to ensure the case fits snugly on the phone.
