As for your husband, when he feels you re 'actin strange' ask him to ask who is talkin/actin at that point. It will validate her bein there, and calm her a bit too.
As for feelin unsafe in the present, that sounds normal if she carries all these feelings.
Can you create a safe outlet for these feelings she holds?
For the agression f.i. rippin up pictures (that can be ripped, like self made destructive drawings, or old magazines, old newspapers,.....) let her really get into it-
Makin drawings- fingerpaint can work- cause you feel the paint drip literally-
Keep usin groundin techniques, it s not cause they don t work now, that they may not work later on when she s used to them
Does she like certain cartoons/movies/music?
Certain colors or activities?
You can, if she does, give her some time out to do somethin she likes/enjoys and that is and feels safe, so she can experience for herself that the present time is safe too?
Selftalk is very important too, by some part or by your husband, sometimes out loud is best, cause more 'grounding'.
Validate her feelings too, that she was right to feel unsafe then, acknowledge that it s okay to feel what she feels, but that right now it s no longer necessary.
Check what she needs- safety, love, attention, - what lies beneath all that fear?
Can she talk/communicate about that?
Does she like treats? Can you surprise her with somethin that makes her feel you care about her and her feelings and you re workin towards a better balance?
I hope this is of some help if not, do ignore

!
nina11