I am a police officer, and just wanted to offer some help as to why this has turned into a bit of a nightmare!
Incidents that happened in different force areas are a total pain in the butt to report. You would think it would be easy, but it isn't. As an example - you live in London, and went to Liverpool for the weekend. Whilst there you were assaulted. You were unable to report it at the time due to getting medical attention, then having to return to London. You would think that you could walk into your local police station in London and it would be dealt with simply?
No!!
Option a) Your local station refuses to take any details at all as it didn't happen in their force area. They tell you you go and phone Liverpool Police.
Option b) Your local station are quite helpful, take the report and even take a statement from you, then tell you that all the paperwork will be sent to Liverpool. From there you either 1) Never hear anything from Liverpool and they deny ever receiving anything, and your local police can't help as they say they sent it, 2) Keep chasing Liverpool and about 3 months later they eventually receive the paperwork, or 3) some kind of variation of 1 and 2 put together.
Option c) Your local station are semi helpful, take a crime report, but don't take a statement, then tell you it will be sent to Liverpool as per option b). problem with this is that Liverpool need a statement, they are unlikely to be allowed to come to London to take it, so then there is a stand off between Liverpool and London to get the statement done.
If you think this is a joke, sadly its not. Is it right - definitely not.
Anyway, please keep chasing, start mentioning complaints, and something might start to happen. You shouldn't need to complain, but sadly it helps. Supervisors don't like complaints, as then they actually have to do some work!
Can I ask a question - the second statement your daughter did, were you there? If not, was another adult? Anyone under 17 needs an appropriate adult with them. Depending on her age (I think you said she was 11?) it is perfectly acceptable to do a written statement, but most forces and child protection cases do like to do a video interview instead. However, if a statement has already been given and covers everything, there should be no need to do this as her evidence has already been covered in the written statement.
Please perservere with this. As a service we do get it wrong (more often than we should sadly) but as I say, with resources cut to the bare bone, it is only those that shout the loudest that get heard, so keep complaining until you get somewhere.