What are your favorite nicknames for [name_f]Theresa[/name_f]?
Mine is [name_f]Tessa[/name_f] thanks to a beloved book called The Corset Diaries by [name_f]Katie[/name_f] MacAlister. The heroine is named [name_f]Theresa[/name_f] nicknamed [name_f]Tessa[/name_f].
My gp is Tree after seeing a horror movie with a protagonist call that. Realistically it’s [name_f]Tess[/name_f].
[name_f]Tess[/name_f]
[name_f]Tessa[/name_f]
[name_u]Reese[/name_u]
[name_u]Essa[/name_u]
[name_f]Teri[/name_f]
[name_f]Ree[/name_f]
But my favorite is probably [name_f]Tessa[/name_f]!
I like [name_f]Tessa[/name_f] and [name_f]Tess[/name_f]
I love [name_f]Tess[/name_f], [name_f]Tessie[/name_f], [name_f]Tea[/name_f], and [name_f]Tressa[/name_f].
My fave is [name_f]Tess[/name_f] or maybe [name_u]Reese[/name_u]
Tessa!
Tess or [name_f]Tessa[/name_f] would be the most common ones. Also could see [name_u]Reese[/name_u] and [name_u]Terry[/name_u]/Terra being options.
I know a [name_f]Theresa[/name_f] who goes by T and Resa ([name_u]Reese[/name_u]-a) But I also like [name_f]Tess[/name_f] as a nn.
My coworker [name_f]Theresa[/name_f] goes by [name_f]Terri[/name_f]
My favorites would be [name_f]Tessa[/name_f] or [name_f]Tess[/name_f]
Some other ideas are…
[name_u]Reese[/name_u]
[name_u]Terry[/name_u]/Terri
Resa
Mine is [name_f]Tess[/name_f]! I definitely prefer [name_f]Tess[/name_f] to [name_f]Tessa[/name_f]. For a slightly less orthodox/obvious choice, I like [name_f]Ree[/name_f] or [name_u]Reese[/name_u] too.
Tessa and [name_f]Tess[/name_f] 
Tessa and [name_u]Reese[/name_u]!