I was that child. I have just one child (thankfully) just like it. And even though many yrs have passed...It is still a challenge. Discipline was only once pc to this puzzle though. Being strong-willed could be "just" discipline or it could be something else like sensory...in which a child still needs discipline and other interventions...
With that being said, I was an elem school teacher. I am also certified in special ed. I went on and became a certified parent educator. Yrs ago, I spoke in front of audiences and discussed Parenting/Sensory/Sibling issues, etc...
From what I read above, your child is experiencing sensory issues w/ her clothes and social skills. Kids with sensory (when little like your child) have no way to understand s/he is experiencing. This is when the parent needs to be the child's advocate and get involved asap. Why? Because her daily life activities are being affected. (See below about the cleaners, too).
Sensory processing is a neurological inefficiency where the brain and the central nervous system get "jammed." When that happens, the child feels like "a disaster" but, has no way of communicating this. You might even see days when your child is in sync and you hope she "will grow out of it".
Dr. Ayres first introduced sensory back in the 60's.
With all the kids who have autism now...Sensory is very well known about.
I had sensory. It's not new. Nobody helped me when I was a kid. I remember to this day...I looked up at the ceiling in my Kindergarten classroom and said, "I can't do this school thing." I was labeled shy in school. I was a bear at home. When I was 9, I ate my way through the days. I became obese and was bullied horribly. I can't blame my Mom...She didn't know and she liked to see me eat.
I just did a consult w/ a parent last week. I told the Mom everything I needed to say and then told her that even if her child had no diagnosis...She could take a load of bricks off her shoulders and work on the discipline.
What can you do? Seek out a developmental pediatrician. They know about autism and kids w/ autism have sensory. I do not have autism. My child does not have autism...But, we both have sensory. Also, find an occupational therapist who has training and is SENSITIVE to sensory processing. I say this because I brought my child to an OT was did not have the extra training in sensory and I knew more than she did.
Books are great, but, intervention for your child (if it is needed...is action under the guidance of a professional).
Sensory is like a hidden disorder and often unexplainable by the parent. It's not very well understood. It could overlap w/ allergies, ADHD, ADD, anxiety...Sometimes not.
I had to pull my child out of one school and put her in a school where she could chew gum. She needed the input from the jaw. Every time I called a PPT, I made sure my child got the intervention she needed.
One parent I worked with did not need to do OT intervention w/ her child...I told her to change her laundry detergent to Seventh Generation and her cleaners to green cleaners...even the bar soap... and her child "felt" better. The child was allergic to all the household toxins. The Mom donated the toxic cleaners, the candles, food dyes, most junk food, sodas, etc...to friends who wanted them.
I would take her for an evaluation and see. If it is sensory, occupational therapy is fun. And it helps soooo much !
I hope this helps ! I do OT at home every day of my life to stay in sync.
Kristen