求助！新概念第三册的一个句子

六十课第三小段：
.........since her parents had impressed upon her that it would be unforgivable to miss it and cause the friends with whom she was going to stay to make two journeys to meet her.
这里with怎么理解？
谢谢答复，鞠躬了先！

the friends whom she was going to stay with ...