L.C.
The term "terrible twos" is an oversimplified way of saying they have begun to flex their muscles. She want's what she wants when she wants it. She wants to be in charge of herself. She wants to decide when she potties. She wants to decide if her diapers being changed. She wants to decide if she plays with daddy. She wants to be the boss of her younger sibling. And if she can swing it, she wants to be the boss of you. It's all about control. Some things to do:
1. Make a list of easy to follow rules with matching pictures. They should be stated in a postive way, because toddlers understand positive instructions better. For instance, have the words "Use gentle touches" with a picture of her hugging her younger sibling beside it.
2. Begin to make effective use of time outs. One minute per year of age in a place you designate. Not in her room or by herself. Be consistent. Give one reminder or warning and redirect her to something you want her to do instead. If that doesn't work, put her in time out and tell her why, "You hit your sister and we use gentle hands". When she is out of time out, redirect her again to something you want her to do.
3. Use positive directions as often as possible. Instead of saying, "Don't run", say "Walk."
4. Give her choices where you can. Hold up two shirts and let her pick the one she wants to wear. Let her pick the plate she eats off of, the cups she drinks out of, the toy she would like to play with. Don't go crazy. This is new for her. Keep it to a few things she gets to choose routinely, not everything and never more than a choice of two things.
5. Assert authority where things are non-negotiable. Regardless of what she wants, sometimes you still know best. Diaper rash is non-negotiable. She gets changed when you change her. She goes to bed when you tell her.
6. Have dad doing special things with her that you know she can't resist. If she loves to play with playdough, have him get the playdough out for 20 minutes. Let him make a bedtime snack you know she loves. Have him help with the bedtime routine. Don't swoop in when she says "no" and that she wants YOU to read a story. Be "busy". It's him or nothing.
7. Catch her being good as often as possible for a while. Even in small things. Praise her lavishly. You can even keep stickers nearby. Even if she's covered in them at the end of the day, it's better than no recognition and she will start seeking out positive attention.
I know this is long, but I hope it's helpful
L.