OH--I can understand your nervousness. You want everything to be perfect and to win her love back. Just take it nice and slow. For the weekend, my advice is to "act as if" you are on a date--taking her out for the first time. On a first date you wouldn't talk about R because there wouldn't be one yet, so don't talk about it. Just go have fun and enjoy her company. Don't even touch her if she gives you a signal that she is uncomfortable with it. But try not to take it personal either. Let her initiate any talking or touching. Just be on a date having a good time. When it's over thank her and let her know you had a great time (assuming you do, of course) and appreciated the time together.
Don't have any expectations of her either. And know that your R isn't going to be fixed in a weekend. It's going to take some time and hard work on your part. Back off a little and let her see what a kind, gentle, fun loving person you are.
You may find you have to bite your tongue alot but it can be done. Patience is the key. Take your time and let her take hers.