That's a tough one. I agree with Firefox on the silk, but from what I remember the most head rubbing came from the car seat. If you can safely get a silk scarf on the back of the seat, that will probably help, but it will have to be secure so there's no suffocation risk. For getting the knots out, try just a dab of KCKT. It's very gentle so shouldn't irritate her skin at all. She also may lose this hair--I'm not sure if all babies lose their newborn hair, but both of mine did between 4-6 months--and it may grow in with a slightly different texture. Although my younger son's hair grew in curlier!
3a/b, F, normal porosity
Wash with either Suave Tropical Coconut, As I Am, or CJ Daily Fix
Condition with STC or Yes to Blueberries and detangle with Denman, rinse very lightly (baptismal rinse)
Add LAL gel, either Sport or Wet Look, scrunch with flour sack towel, and plop
Diffuse 5 minutes, then air dry