She looks combo Rat Terrier &/or Min. Fox Terrier. You mentioned her cycle: PLEASE GET HER SPAYED: dogs have an almost 60% higher rate of cancer after age of 5 when not spayed/neutered (all those hormones & sexual organs) & it will make her a MUCH better pet (she'll focus on you, not mating) & there's TONS of Rat/Fox Terries in pounds that need rescuing!!!

We rescued her in November.She is very playful and sleeps the whole night.She had her first cycle this month.