I thought she was obviously jiggling too much up and down so must have been wasting energy. The Milan should go faster than she managed as she is a fit rider. Also i wasn’t sure what the problem with corners was as they corner like they are on rails.
By multitrack standards. I was impressed when I took Lee's round the rather twisty track at Gravesend. But if you're only used to bicycles, any trike is going to be scarily different on corners. Especially an easily-scratched borrowed one.
I am a slow rider but even in my 100 kg days I could pedal my Milan up to 45 km/h over a couple of hundred metres and I have no acceleration and very little power.
She was going a bit faster than I can manage on the Baron under similar conditions, albeit at more sensible temperatures. I've yet to establish my V
max in a Milan, as Covid-19 happened before I had an opportunity to try on a more suitable track.