I have no idea about that pink blob, but the drop of water and Aeris' melody playing right after it
are supposed to imply Aeris was healing them in that scene, so yeah, she was there.
"There" as in watching over them, sure. "There" as in the scene, no. Much less between the two. Guiltwolf has a focus in that scene, not Aerith. She could be argued as the backdrop (flowers and whitespace) but again, that doesn't make her 'between' the two, and definitely has connotations of supporting both Cloud and Tifa. But then again, that's the sane interpretation, Zee, and when we involve that picture and the people behind it, we've long since left saneville for crazytown.
Also, Aerith's Melody is not there any longer in ACC, replaced with Anxious Heart, again focused towards C/T.
That's the real point- the focus of the scene is Cloud and Tifa, not Aerith. It's a lot of panning and rotating shots of both of them, a tight focus to both their faces, and that tight shot got used for their keyword, etc. etc. etc.
PinkBlob Aerith in this scene is just another set of craziness from the folks who brought us Rival Orphanages, Meaningless Kanji for Koibito, Almighty Cetra Aerith, and the
Pink Red
ribbon string connecting Aerith to Cloud (and not Zack) and Tifa's hair ribbon doing no such thing.
Model Continuity errors= True love. Welcome to Crazy town.
I suppose labelling them facetiously as 'Real True Cleriths' works as a handle, since they do treat anyone with anyone going outside the party line as 'not a real Clerith.'