Where does the red stripe fit in in ITF?
A lot of people are afraid of contact, especially when they've been hurt before. The only advice I can offer is to build up slowly, maybe start with 1-step sparring and gradually build up to free sparring.
I don't have experience in hard contact sparring, though an (un)lucky shot can send you to the mat at any time (Witnessed that at a rank testing, one girl moved into a hook shot of some sort, went down like a sack of potatoes...had a concussion, too. Her partner was one of the more controlled guys in the school and an absolute doll, so not somebody out pommeling girls)
I tend to get mad when hit in the head. But as I said, never got pommeled.
I'd take it back to basic:
One steps, three steps (In gear, make it as close to sparring as you can)
work yourself up to sparring drills, like a set sequence of attacks met with set blocks, all controlled, sped up as confidence grows. Then move on to counter drills.
Then light contact drills.