My colleague said she wants to maintain distance from me. I just. Idk what to say

My colleague said she wants to maintain distance from me. I just. Idk what to say 21M interning at a firm. So we 6-7 people kinda got along well and we have our lunch together everyday. This girl in the group mentioned how we both vibe along well, but she wants to maintain distance cuz of my stuttering. Apparently she started picking up my stuttering the more the hung out with me. She mentioned it casually, but idk I felt like I'm ruining someone's life. With other things going on in my life, I stopped talking to the group. I just talk to 2 of my guys (one being my roommate). I'm just done with life now.