How do I follow someone who replied, but I accidentally deleted?

Some people sign their real names.

Is this Kimberley1227? If so, look up her name in the upper right hand corner of the timeline in the search space right next to your avatar. When that name pops up in options and questions, just click on the name. Then you will come to her profile and there will be a space to leave her a message, either private or open. Let her know you lost her original communication to you and that you wanted to reply, and do so.

I can't find another Kimberly on the site, but wish you good luck. You may see her responding again somewhere on AC. Just click on her name when you do, and leave her a message.