Hilda is Betty's older sister and mother of Justin, who she had at 18. Hilda owns a beauty salon and is currently dating a married man, "Coach" Tony. They broke up and now Hilda is dating the councilman, Archie.
[after Ignacio awkwardly walks into Betty's to see a naked coach...]
Hilda: papi what are you doing here?
Dad: I came to protect Betty, install some locks
Coach: What'd you get, Sleigh locks?
Dad: No, Quickset
Coach: Oh those are good
Betty: I'm not gonna let you turn my apartment to in a sex den..
Hilda: It's not about sex, it's about love
Betty: Fine, some love den..
Hilda: If it was just that we could do it in the backseat of his car