I think that the key may be Signum's comment about Tea's attitude and actions being brattish and attention-seeking.
Which, IMNSHO, is completely off the mark.
Since we know that Signum isn't what you'd call the malicious sort, the effect of that, for me, is to call to mind that what is known to and seen by the audience is not necessarily anything any given character is aware of. In other words, Nanoha and the others knew that there was clearly something going wrong inside Tea's headspace, but what, how, why, and to what extent was probably more than anyone save Subaru could guess until well after The Training Incident - and she didn't have the experience or practical context to know of a better response than Tea was giving already.
Ja, -n
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"Reseeestunce ees fiutil. Yoo weeel bee Useemooletud. Borg Borg Borg."
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"V, did you do something foolish?"
"Yes, and it was glorious."
Which, IMNSHO, is completely off the mark.
Since we know that Signum isn't what you'd call the malicious sort, the effect of that, for me, is to call to mind that what is known to and seen by the audience is not necessarily anything any given character is aware of. In other words, Nanoha and the others knew that there was clearly something going wrong inside Tea's headspace, but what, how, why, and to what extent was probably more than anyone save Subaru could guess until well after The Training Incident - and she didn't have the experience or practical context to know of a better response than Tea was giving already.
Ja, -n
===============================================
"Reseeestunce ees fiutil. Yoo weeel bee Useemooletud. Borg Borg Borg."
===========
===============================================
"V, did you do something foolish?"
"Yes, and it was glorious."