You have every right to be scared ink. I went to my heart doctor last week I forgot to include that as a side effect of diabetes, but in my case Chemo and diabetes my lower heart muscle is weak and I am on meds for that again I went without it for 2 months and it's starting from scratch again.
Do you both have bicycles? If so get them out and get her to go bike riding with you in a park to help her get started.