Girl attending school angered head (7)

I believe the answer is:

theresa

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'girl' is the definition.

'attending school angered head' is the wordplay.
'attending' becomes 'there' (I can't explain this - if you can you should give a lot more credence to this answer).
'head' indicates taking the first letters.
The first letters of 'school angered' is 'sa'.
'there'+'sa'='THERESA'

Can you help me to learn more?

(Other definitions for theresa that I've seen before include "Girl" , "-- May, MP" , "May's one" , "Maria -, Habsburg empress" , "Maria --, Austrian ruler" .)

I've seen this clue in The Daily Express.

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