Daughter won't eat or drink

So, my daughter (3.5) won't eat or drink at the moment. It's been about 30 hours since she had anything to eat, and only had a sip of water about 1am last night. She is getting upset about the smallest little things, and then will have long screaming/crying sessions. Our family dog was put down a month or so ago, and I'm thinking that this is part of the issue. Plus lack of sleep sure to her baby sister teething and waking everyone up at night. Please tell me this is all a phase, the three-nanger thing or something....the constant battles about literally everything (nappy off, nappy on, knickers on, knickers off, bath, shower, dinner, lunch, breakfast, leaving the house, everything!) are getting ridiculous........... via /r/Parenting http://ift.tt/2gErHyu