(I didn't know it had plural; learn something new every day!)

Here's another version:

They wouldn't understand why she let Spike touch her here and there and especially there (first 'there' is now a 'here')

Or

They wouldn't understand why she let Spike touch her there, and there, and especially there (commas still there, but 'and' added in front of the second 'there' to break it up a little)

Please let me know!

~Nebula