求翻译：李爷爷生病住进了医院，一天李奶奶来看他，可她不认识路，后来她就问一个警察路怎么走。警察帮助她找到了路。她很感激警察。是什么意思？

Grandpa Li was ill in the hospital, day Grandma Li came to see him, but she does not know the way, she later asked a police way. Police to help her find her way. She is very grateful to the police.