If you want something to carry her around in that is comfortable for her and you then check out the Fundle carrier:
Fundle® Ultimate Pet Sling | Dog and Cat Carrier | Pet Car Seat and Travel Bag
If you check out their website you will see it comes in a couple of different sizes plus various materials and patterns. It is very comfortable for the dog because it is built to make them feel like they are being held. The head can be inside or out. It is not as small and discreet as most purse type carriers but it is comfortable to carry because the weight of the dog is not all on one part of your shoulder. If you are using it in hot weather then probably the canvas material would be best.
If you are going to do a lot of walking then the stroller is a good idea, too. It's handy to have both a carrier and a stroller.
If you do a google search you will find other outlets sell the fundle carrier but most don't have as wide of a selection.