Therapy's beginning — really — through touch (9)

I believe the answer is:

tactually

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'through touch' is the definition.
(tactual means relating to touch)

'therapy's beginning really' is the wordplay.
'therapy's beginning' becomes 't' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'really' becomes 'actually' (synonyms).
't'+'actually'='TACTUALLY'

Can you help me to learn more?

(Other definitions for tactually that I've seen before include "get by touch" , "in a touching way" .)

I've seen this clue in The Times.

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