Possible Clues:

• When she's overseas she does not behave herself
• At large - overseas
• When out of the country one is not socially acceptable
• Away from home she'll give you a 8 across
• When she's away from home she may be 3 down
• Out of doors - in foreign parts
• Jack on the way to distant climes?
• Overseas.
• She's no doubt improper, when she's away
• She might misbehave 18 down