Crossword Genius

See women planning trips with kids. occasionally — one's down with them (3,7)

Ross

I believe the answer is:

low spirits

I'm a little stuck... Click here to teach me about this clue!

Here is my best explanation:

'kids occasionally one's down with them' is the definition.
I can't tell whether this defines the answer.

'see women planning trips' is the wordplay.
'see' becomes 'lo' (archaic word meaning 'look!').
'women' becomes 'w'.
'planning trips' becomes 'spirits' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'lo'+'w'+'spirits'='LOW SPIRITS'

'with' is the link.

Can you help me to learn more?

This clue was last seen in The Guardian