M., congratulations on your new arrivals! The twins are still young. Although your daughter is used to being the only one, this adjustment period will mature her and she will learn and grow from it in time. I have a 2.5 year old boy and 9 month old daughter. When I first brought her home I didn't know what to expect nor how I was going to handle meltdowns from my toddler. He is very needy and always asking for help creating train tracks and hooking trains together and getting things off shelves and putting in movies and asking for snacks etc. So I can imagine how you are feeling taking care of twin newborns and a toddler who is not used to having siblings!
I have to tell you that before you know it you will have establisehd a routine at home that works for everyone. It is still early and with all the great advice you have received I am confident that by the time your twins are 4 or 5 months old you will have a routine down and your daughter will have accepted them as permanent additions to the family.
Always try and involve your daughter in the picture. What I would do was always look to my son and say "Uh oh. Your little sister is crying. What do you think is wrong? What do you think we should do? Do you think she's hungry?" Etc. I would let him give his opinion and suggestions. Let him follow me in to the diaper changes or ask him to hold her bottle while I got the bib. Also, when I was feeding the baby I would still interact with him verbally. I would ask him about his friends, what shirt he was wearing, what animals he likes, about a show on TV, about his train tracks, etc. I would keep a conversation going so he knew that I was still concerned and interested in his life even when I was attending the infant.
Another problem we had in our adjustment period was our toddler learning to wait his turn. He was very impatient at first. He wanted his needs met NOW. We taught him how to "wait his turn" by role playing with his trains. We would put one train on the tracks and tell the other trains to "wait their turn". I would also talk to our infant and tell her to wait her turn when I was meeting my toddler's needs so that he could learn the "give and take" of it.
When we would ride in the car together if the infant started crying I would ask my toddler for help singing to the infant. He would join in song. And just yesterday we were in the car (the baby is now 9 months)and she was crying away and I hear my son start singing a nursery rhyme to her with no cueing; completely on his own.
Just the other day we set up a small nerf basketball hoop and we were all taking turns at the basket. Even my 9 month; I would carry her over to the basket and "help" her throw the ball in the hoop. My toddler quickly caught on and was happily asking her to take turns at the basket. Completely oblivious that I was carrying her. He just saw her as one of the players. Even when I left the room I could hear him asking her if she wanted a turn at the basket.
Always emphasize how much the twins will look up to her and how she is going to be an example to them. Praise her a lot for being a "good sister". Buy a toddler book about being an older sibbling and read it to your daughter. The book will help your daughter realize that other boys and girls have siblings too and will also show her all the things she can do that the baby's can't. She can eat ice cream and play dress up princess but the newborns can't!
Also, I know your twins are still so young but once they are older your daughter will be able to see them more as real people once they start interacting and responding. Always keep the "we are a family" mentality rather than them vs. her. Use "we" more than you use "you" and "them" so that your toddler can mature out of the "me, me, me" stage. Even though now that the twins are so young it will seem silly to include them in some games or activities, your toddler can just get into the habbit now of always including them.
I always make my toddler say goodnight to the baby and give her kisses and to say good morning etc. After a while they do it without cuing. They learn the consideration from you. At age 2 they copy behavior so much that you can easily mold them by just repeating phrases and routines that you want them to adopt. If you routinely ask your daughter to kiss the twins before bed after a while she will naturally do it on her own. If you conciously and outloud explain how the twins are hungry and sad because they want their milk rather than just: they cry and you feed them-- your daughter will learn the empathy from your voice and your words. When the twnis are crying if your daughter hears you say "oh poor babies, are you hungry? Do you want some milk?" You will soon hear your daughter copying you. When the twins cry you will hear her say "poor babies, are you hungry? Mommy, the twins want milk" etc. It happens naturally.
It is also good advice to have one-on-one time when possible with just your daughter as some other mom's suggested. I hope my suggestions will help you as well.
As far as your household chores think about getting some extra help or otherwise don't stress too much and let some chores wait.
Best of luck, M..
Regards,
R.