Children of transvestite mother British took to their hearts (3,6,4)

'took to their hearts' is the definition.
I know nothing about this answer so I can't judge whether this works.

'children of transvestite mother british' is the wordplay.
I cannot really see how this works, but
'children' could be 'boys' (I have seen 'Male children ' mean 'boys' so perhaps 'children' could also mean 'boys') and 'boys' is found within the answer.
'of' could be 'o' and 'o' is found in the answer.
'british' could be 'br' (abbreviation for British) and 'br' is located in the answer.
This may be the basis of the clue (or it may be nonsense).

Can you help me to learn more?