Pet Care Needed

Hi! Iam taking my brothers dog. He is in the hospital for at least two weeks. The dog is "Molly". She is a 4 1/2-year-old black lab. She is very friendly. But.. she has grown up in a fenced in yard. I do not have that, so I think someone to take her for walks or just outside would be great. She is very friendly and quite energetik. I am 78 and us a cane , so I do need help with her. At least for two weeks. Hope you can help...