Well, she has started a Spitfire of her own since then, which is almost finished but has taken her about six months! She's quite good at the painting, but not so keen on the building. Mind you, she's 16, so I think it's good that she's even taking that much of an interest.
With regards to the DayGlo paint, it's an absolute nightmare to use. Damn stuff starts drying on the brush - if you don't get an even coat on first time, you can forget about applying another one for a while, as if you try it will lift the first layer right off. It also 'chips' - that Spit now has a bald patch where it got knocked, and it came off like a sheet of plastic. I'm sure if you were careful taking it off, you could end up with a shell, like a snake shedding its skin!