Calm the lady also capsized and trapped inside (6)
I believe the answer is:
soothe
'calm' is the definition.
(I've seen this before)
'lady also capsized and trapped inside' is the wordplay.
'lady also' becomes 'she' (I can't justify this - if you can you should give a lot more credence to this answer).
'capsized' says the letters should be written in reverse (in a down clue, the word turns upside down).
'and' becomes 'too'.
'trapped inside' is an insertion indicator.
'too' back-to-front is 'oot'.
'she' enclosing 'oot' is 'SOOTHE'.
'the' is the link.
Can you help me to learn more?
(Other definitions for soothe that I've seen before include "'Console, comfort (6)'" , "Console, pacify" , "Cause to feel better" , "Gently calm" , "Assuage, calm" .)