Quite frankly I think if she needs to take a break, then you need to make her take a break from you until she has decided she really does love you and want to be with you. I'm sure she is confused as well right now; however, how can she truly make any sort of decision while remaining in constant contact with you, and dragging you through her other relationship. It's up to you to protect yourself, your sanity, and ask her to respect you and give you the space you both need to sort this out.
You say you love her and miss her, but how do you feel about her cheating on you? Essentially, this is what she's doing while she's figuring her life out- as long as she keep you on a leash. If you were truly taking a break, you wouldn't be in contact with each other as often as you are.
Also, I think it is disrespectful of her to keep asking you to do favors for her while she is giving her time to somebody else. If she needs a man to do her favors, she should have her new friend do them for her.
Stand up for your best interests. Good luck.
