I think she is being a normal 2 year old, she's revved up because Daddu is home, and I don't think punishment is the right term, or should necessarily be employed for the loud voice. "Discipline" would be more what you and her need, which is defined more as teaching - in this case, more appropriate behavior. Decide what behaviors are absolute no-nos (i.e. hitting, pushing, screaming) and place in her time-out for 2 minutes whenever they occur - be consistent, don't lecture or yell, just tell her this is what happens when she decides to hit, etc. If necessary, pick a different spot for time-outs that's less interesting than the living room. In our house, the bottom of the stairs, or on the floor just outside the bathroom were favorites because they are boring and there's absolutely nothing there to get DD's attention. If her loud voice is just from being excited (rather than screaming defiantly at you), if she didn't listen the first time you told her to quiet down, I would gently take her aside, remain calm, get down on her level so you have direct eye contact in her face, hold her arm or hand to keep her attention focused on you, and calmly but firmly remind her that she needs to use her indoor voice. Then have her talk to you in an "indoor voice" so she understands what you mean. But realize that she is only 2, and it's going to take her a long time to "get it." At this age, until about 5 or so, they are very ego-centric and they really have no concept that other people have feelings too. That doesn't mean they can't be taught and disciplined, just that you need to keep your expectations realistic. I would also consider if Daddy is adding to the "problem" by getting her worked up when he comes home as well - tickling, wrestling, that sort of thing.