Walks will help to take off the weight. Start short. Remember, the surroundings are all new to her.

When I started walking Sugar, I started with one block. She is nearly blind (cataract surgery is set for Jan 29th) so she relies on hearing and smell. It took a few times for her to adapt to that one block. I didn't want to rush things, as we just got her and she hadn't learned to trust me yet, either. So if she wanted to stop and just smell or listen, I let her. Now we are up to 4 blocks and vary the routine. Each time I add a block, I notice she goes a bit slower, more cautiously, on the new territory.

You have the weather working for you. The cold, and snow, means you won't want to walk too far or be out too long. By the time the weather is nice out, she should be able to do a nice longer walk. So enjoy!