You've done a fine job and you can afford to relax a bit. Kelly/Bella has made an unsubtle effort to throw literally everyone in proximity to this affair under the bus, in a vain attempt to avoid having her creepy social media habits linked to her real name, behaving a bit like a rat on a sinking ship. Drowning rats stink, and you don't want to smell like one when the bloodhounds are out ratting. The internet hates "clever people," after all.
You on the other hand have shown up, given a pretty straight-forward account of the situation from your eyes, admitted to being "strange" (perhaps a bit too enthusiastically, you aren't that weird by internet standards) and even voluntarily verified yourself.
It's pretty obvious to anyone who isn't 19 how this will shake out, and it doesn't look good for Kelly/Bella, frankly.
If you want to help Fiona, trying to get less edited versions of the texts or more evidence of her trying to keep interactions with Chris on a sane, moderate level would do it.
Fiona seems like she may be skittish, so I don't necessarily recommend having her come here herself, but if she has any juicy conversation logs to forward you that would indict the actual culprits of the gayop, or anything funny to share? It'd be well deserved.
