I doubt it. They had a year to get around to it. True bisexuals would have never taken that long. When Malia first arrived, I had the impression that she was ready for it, but Leora wasn't interested at all. Eventually, Malia either lost interest, too, or just gave up trying.
Toward the end of the year, Leora seemed to become more comfortable with being with another woman. She was more active with her fingers on Malia's pussy, and even (so I've heard) went so far as to taste a pink dildo that she'd put into Malia. Once.
Based on what I've seen, If Leora eventually went down on Malia, or allowed Malia to go down on her, it would more likely be for viewer/RLC satisfaction rather than something she actually enjoyed. Y'all bitch about her having to have sex with Paul even though she couldn't possibly enjoy it, yet you keep this girl-girl fantasy of her and Malia going on. Hey, what's life without a dream?