Proof reading is done electronically. All of the suggestions are made for specific, deliberate reasons. Suggested changes are tracked for your review so that you can accept, reject, or modify them as necessary. In other words, you have full control over your content. There will be comments for you when a sentence might need further work, when we think it may be helpful for you to see the reason for a suggestion.
If you are new to tracked changes, no worries — I have video tutorials available, or I can walk you through it over the phone at no charge.