I have friend (girl) and she's too jealous. I just want to mention her in Russian language that I have another friends (girls) and she cannot avoid me to be with them, especially when she's not my girlfriend and we're (and we were) not couple.
Now, if I tell her "у меня есть ещё подруги" then she'll not understand, because подруги can be males or females while I want to tell her that I have another friends - girls and she has to accept it as they should do the same.
If I tell her "у меня есть ещё девушки" she'll understand that I mean to female friends and not girlfriends?