If you are referring to Saint Barbara of Nicomedia, there is no factual information extant about this person or about friends she may have had. In 1969, because the accounts of her life and martyrdom were judged to be entirely fables, lacking clarity even about the place of her martyrdom, Barbara was removed from the calendar of saints and her cult suppressed. She may, or may not, have existed or the stories about her life may be a composite of several virgin-martyr saints. For more information about Saint Barbara click on this link.
Probably not, as her father kept her a prisoner in a tower, for most of her life.
There is no surviving document telling us if Saint Lucy even had a hobby or if she had any friends.
The poor were her friends and also her companions who helped in her hospital.
Saint Rebecca (Saint Rafqa) is not the patron saint of any country as per the Patron Saint Index.
There is no reference to any saint named Madison.
I can not find any saint by that name.
I can find no reference to any saint named Roxanne. There is a Saint Anne, however.
I can find no reference to any saint named Yegor.
I can find no reference to any saint named Yeagor.
Cecilia is not the patron saint of any countries.
I can find no listing anywhere for any saint named Eileen.
I can find no reference to any saint named Maeve.
Not according to the search engines that I looked at.