Raleigh also made the Colt, which was a downsized adult bicycle for bigger kids and teens.
The boy's version of this was a "camelback" (curved top tube) to provide a reasonable standover height while still using the 26" wheels of the adult bikes. I've owned a Rudge version of one of these as a 5' 7" adult and found it to be a very comfortable rider, with the same light, quarterhorse handling characteristics as a fullsized Sports.
If you found a girl's Colt in nice shape and an attractive color, you stepdaughter would have a bike well worth keeping.