Asperman, 26, California.
Make the time to have sex with her on her terms. Do it. My long term NT girlfriend just left me this month (January 2016) and I have been devastated and overloading back to back from the emotional turmoil.
Relationships are far more fragile than anyone would like to believe. People say forever and say they are fully commited. However! Woman in particular ten to be "emotional deciders" meaning they act, do , or decide based on their emotional state or feelings on a situation or relationship. Your woman is not feeling the relationship 100% right now. She has communicated to you what she wants and how she wants it multiple times. Failure to adapt and provide it will be considered YOUR failure as you in fact should and need to be adapting to your partners needs.
You have to adapt before her feelings about the relationship snowball. If it snowballs she will become less affectionate and intimate in all the other ways you mentioned. Less kisses, less snuggling, less wanting to go out, less laughing at things you know she enjoys or finds funny. It's emotions and feelings dude. Commitment or saying "We'll be together forever" does not a lasting relationship make. Adapting, communication, listening to your partner, providing for ALL of her needs is what keeps a relationship strong and going.
Most relationships peter out in less than two years as the honeymoon phase almost always ends before that point. During the honeymoon phase of any new relationship hormones are extremely high which is responsible for the mega sex drive , hyper affection, and addictive nature of new love. You two were literally addicted to each other at the honeymoon phase (the same parts of the brain light up for heroin as they do for new love) After the honeymoon phase those hormones drop and so do the natural relationship maintaining effects they produced. It is now up to you to adapt and provide for all of her needs without the help of those hormones. It's a long term relationship, You've entered hard mode.
Figure out whatever you need to do to provide for her needs. This is a NEED, not a want. You HAVE to provide this need for her if you expect the relationship to continue.
DO NOT PANIC! Research. Research how to increase your sex drive or figure out how to distress enough that you aren't too tired for her. Go have sex with your beautiful loving girlfriend. Why the hell are you here?
THIS IS AT CRITICAL MASS AND YOU MAY NOT BE AWARE! FIX IT NOW! I MEAN TURN OFF THIS SCREEN AND GO HAVE PASSIONATE TRY HARD SEX!