This song was born in bassist/vocalist Chris White's bedroom and only had one verse until producer Ken Jones heard it. "I remember we were playing in Hatfield, and Ken Jones came up to hear us. And after the gig, Rod said, 'I've got this song that we've been rehearsing' and he played it to Ken on the piano. He did the verse, and then the solo, and there was no second verse, and Ken said 'Can't we go back to the beginning again?' So Rod had to write another verse, because it only had one originally."
On 'She's Not There' Ken Jones also instigated a recurring trait of many Zombies' recordings: additional overdubs added in the mixdown to mono stage from 4-track. In this case, there were a couple of extra beats superimposed to create a distinctive drum pattern, thereby rendering the original mono single mix of 'She's Not There' the only 'correct' version of the song.
DeeTheWriter - Saint Petersburg, Russia Federation, for above 3