That's... unexpected, to be honest! Childermass hadn't even considered that the Summer Queen might help him with that, although that the Rose Queen's tantrums has more to do with it happening than simple kindness makes it a very enjoyable irony.

He won't waste the Summer Queen's time with more words and instead just offers her a short bow before tugging on Lambert's arm to direct him back towards... well, wherever most of the carnival happens to be clustering up.