I won't spend more substantial amount of money on it in any shape or form ... As a grocery bike it's good as is. I live in Adelaide, so it's not the same high-risk situation for bike theft and vandalism. Canvas box out front does just fine.
@Vince and @pascalo we're strongly considering getting a 800mm front-end, but costs are super high. At the moment our 7 year old still happily jumps in it when he's not riding, but it's not going to last forever. Can't see ourselves ever selling it as it's so bloody handy!
You could order the 800 front end so your daughter can enjoy the bike a bit longer?
Or get an AluLock box to turn it into a grocery getter