Is it okay if someone edits my essay?

I know it’s okay for someone to “proofread”, but what about the actual “revision”?
I just wrote a lot (went over word limit on purpose), and my counsellor edited it, summarizing and rephrasing some parts.
I’m just wondering whether it is okay to do that. I wrote the essay, the revision still has everything that I said in the rough draft, but it’s just reworded a little differently. My previou 3 supplementary essays sound bit different from this one, so just unsure since I don’t want any misunderstandings.