On the dog food, some Akitas can just be picky eaters. Especially if she had sampled something she liked better lately. Feeding lots of treats can also allow an Akita to hold out until she gets something she wants. Unless she has medical problems re her weight, dont worry about her not eating for a day or 2(assuming you freefeed). If you arent freefeeding (this is according to what I've read, as I always freefeed), placing the food down for a limited period of time, say 20-30 minutes, can teach her she only has a 'window' of opportunity to eat.
FWIW, I HIGHLY recommend freefeeding a quality food and strongly suggest you dont give in to a picky eater unless it is effecting her health.
Re the whining: when she does that, play with her. If she's upset, do something she likes. This will also train her to come to you and 'speak' when something isnt right for her.
