It's more about how is it affecting you, I suspect. If you can identify what assumptions you had made about what life would be like as a parent, especially about how your daughter "knows" she's loved v. how you want to show love, that will help you both.
My mother could not understand why I hated being hugged, why when she said, "I love you" my reply was mechanical "I love you too." She took my stimming personally and criticized me heavily because I didn't act like everyone else: "why can't you be like the others?"
I didn't meet the brag threshhold until much later, and even then, she complained about my coldness.
Jim Sinclair wrote an essay titled,
Don't Mourn for Us, in which he said:
"Non-autistic people see autism as a great tragedy, and parents experience continuing disappointment and grief at all stages of the child's and family's life cycle. But this grief does not stem from the child's autism in itself. It is grief over the loss of the normal child the parents had hoped and expected to have...the discrepancies between what parents expect of children at a particular age and their own child's actual development, cause more stress and anguish than the practical complexities of life with an autistic person."
His essay goes on to discuss how fantasizing over how life was supposed to be, or expected to be, and the parent-child relationship that was anticipated, separates parents from the child they do have. That child
can form meaningful relationships, but they won't meet the Hallmark standard for sentimental sloppiness (yeah, I'm editorializing with that last phrase).
Sinclair's essay goes on to point out that a parent may grieve the loss of their child--that is, the fantasy child, and take it out on the actual, loving, needy real child they have. You sound like you're in a much more accepting place, in terms of things, but I'll close the point with his words, which were written to parents who don't cope so well:
"...you expected something that was tremendously important to you, and you looked forward to it with great joy and excitement, and maybe for a while you thought you actually had it--and then, perhaps gradually, perhaps abruptly, you had to recognize that what you looked forward to hasn't happened...and isn't going to...It isn't about autism, it's about shattered expectations. I suggest the best place to address these issues is not in organizations devoted to autism, but in bereavement counseling...where parents come to terms with their loss...and learn not to take out their grief on the child that remains."
You can't live your child's life for her. You
can find out what she thinks love looks, feels, smells, tastes, and sounds like. What makes her happy? It may not be the same as what makes you happy. But you may find that she follows your example, and learns what makes you happy, and you have an asymmetrical demonstration of affection that feeds you both.