Possible Clues:

• Complained after German found out
• Complained
• Girl initially found out complained
• Complained with good drink allowed to seep away
• Good-for-nothing finally seen through complained
• Expressed discontent
• Complained in a bad-tempered way
• Complained or murmured discontentedly
• Informed guide leader first who complained
• Gee, one was not pleased when the drink was so bloody!