Hi - my youngest is in Year 6 at Lowther, and my eldest was there (now in Y9 at a local indie). Both my girls sound a lot like yours, bright and emotional, especially my eldest (still easily distracted!).
I'm bound to be biased, as after many years as a parent (some of it as a governor) I'm pretty attached to the place and will be so sad to say goodbye. But I can honestly tell you that I have no regrets at all, and both girls have flown - the balance of strong ethos with good teaching and a lot of happy times has been just what they needed and as a secondary school mum I can really see how the strong primary base Lowther provided has paid off.
The school has changed over the past ten years, getting bigger in size and stronger in terms of academics, but the central values are unchanged - thank goodness. The importance of feeding the chickens, baking bread, appearing on Blue Peter or being confident enough to lead an assembly is still up there alongside SATS results. There are kids from all walks of life, all cultures, and all abilities - and best of all, for me, is that all of them, irrespective of their roots, seem to grow in confidence - able to speak up, talk to adults with enthusiasm about what they're learning, and trust they'll be listened to.
Whether its right for you, only you can say after visiting - but do feel free to PM me if you want to chat :)