Lorelei and Dorothy's friendship

Lorelei is characterized as a shrewd character who on the surface wants to get educated. Throughout the whole book, it feels as if she has her way around men, but not women, resulting in that the only female characters we meet are only her best friend, Dorothy, her maid, and the antagonist of some sort, Madam Beekman. The lack of female friends might be one reason that Lorelei have Dorothy as her best friend, but I think there is something more than that. Lorelei's relationship with Dorothy is mutually beneficial, for example Lorelei's relationship provided Dorothy with the opportunity to travel to Europe, and Lorelei can always count on Dorothy to have her back. A good example would be when Lorelei met Madam Beekman, Dorothy stood up for her and got more angry than Lorelei did. Also at the end of the novel, Dorothy was trying to dump Henry, Lorelei helped her by going to her apartment to talk to Henry and to bad mouth Lorelei to destroy the engagement. In the book, Dorothy just goes for anyone who gives her the eye, is a little bit more handsome, and is out for love, while Lorelei goes for anyone who have money. Dorothy watch out for Lorelei, in fear of her landing herself in a marriage of only money and is loveless, while Lorelei watch out for Dorothy, in fear of her only looking for true love and end up marrying someone penniless.