M.R.
Instead of using a walker, why don't you get her a push toy or walk-behind? The walkers aren't all that great because they allow the baby to rest their hips and chest on the apparatus while they walk. This is problematic because they're not developing the core muscles/strength necessary to stand on their own and eventually walk.
Here is an example of a great "stride to ride" toy:
http://www.fisher-price.com/fp.aspx?st=2341&e=detail&...