She's a tuxedo magenta female guppy. This strain is also called flamenco dancer, HB magenta, Velvet tuxedo magenta, tuxedo pink and HB pink.
So, if the other one has dropped fry, she must have used stored sperm packets. Females of ovoviviparous livebearers such as guppies can store sperm packets in the folds of the fallopian tube for over a year even.