Go into Local Disk (C:)>Feralheart>presets (not my_presets!) and do you see the .fhp that was exported into there? It should have the number of preset after the _ so you know which one it is.
Go to mediafire.com and upload the same .fhp there. Make an account if you don't have one.
Upload it as I said, then put it in the character that uses the preset's bio. The link I mean. To shorten the link I'd suggest going to tinyurl.com and well, shorten the link and put it in your bio as I'd suggest.
Tell your friend to download it then so she can see it. Tell her to put it in Feralheart>presets and not my_presets, then restart the game so she can see it.
Other people should download the preset too so they can see it.
I know nothing about Mac so I don't know much, but this should be to answer since it shouldn't be too different, eh?
Hope this helped. At least this is what I'd do.