A memento from my sexual assault

Nearly 19 years ago to the day my then boyfriend (now husband) and I were sharing an apartment with what I considered at the time a really good friend and his girlfriend, and my so called good friend sexually assaulted me. Without going into too many details, he did have a large knife in his hand, and I was able to fight him off after what seemed like an eternity but was probably only a few minutes. I was too ashamed and embarrassed to tell my boyfriend (again now husband) so I dealt with it alone for all these years until just last night when I finally told my husband - we have been going through a lot of things and my headspace wasnt great and this came to the surface. Anyway, when we moved out and into our own place about a month after the assault the guy that assaulted me gave me a "parting gift"...the very knife he held to my head during the assault. For whatever reason I've kept it all these years. I think possibly as a reminder that even when faced with what seems like an impossible situation that I'm strong enough to fight for myself and make it thru. It hasn't been sitting out anywhere where I would see it, but after last night with telling my husband about the assault, I went looking for it today, not sure why I felt compelled to, but I did. When I found it the entire assaulted played in my mind and I've been siting here all day wondering, what I should do with it. Do I continue to keep it, do I get rid of it, do I give it away?

I'll be straightforward, this was not my first sexual assault the 1st was my own brother when I was 8 years old. As ironic as it is, my brother collects weapons - mainly knives, and also loves dragons, which the blade of the knife i was given has a dragon on. I told my husband tonight part of me wants to give it to my brother...I know he wouldn't understand the symbolism of it, but to me its like he started that trauma for me, so by giving him the knife, it would be like me handing all the trauma back to him and saying how I'm better than any of it. I dont know if it makes sense or if not, and I dont know if I would feel better or not, but now that I've gotten the weight of dealing with it by myself all these years, and I've told my husband in detail what happened, I feel like I can finally let go of the knife and move on. I dont know what is best to do.