Again, for all we know it may be that Malia didn't want any help. If she wanted help, she would text the phone or ask her verbally. If she didn't, it's because she probably didn't need it or because she wanted to do it herself to make sure she packed everything. I don't see any malice on Leora's part in any of this. Also because these days, when they were both at home, they were still together.