//It is really hot where I live and don't know if that can be a factor to her panting? //
Yes, dogs can not sweat, so they cool by panting. Dogs panting can also dehydrate the dog, too....
Also, do make sure the dog is well hydrated, and not overheated. My dog is an intermittant water drinker, some days, he drinks plenty,
other days, not enough.
So i feed him ICE, too, as he loves ice,
and i occasionally add water to his dog food, too.
http://www.dogtrickacademy.com/members/forums/threads/hot-dogs-keeping-dogs-cool-in-the-summer.3104/#post-21846
^actually,
there is a trick involving ICE in thread above, which is super super easy to teach a dog, as well as other ideas and products to help a dog stay cool in hot weather.
My dog pants like crazy, he has ZERO heat tolerance, none at all. None. He totally melts in heat.

So prior to walks if it is anywhere over 75 to 80 degrees,

i get him soaking wet prior to the walk. I leash my dog, step on his leash, and gently run hose water all over my dog,
from his neck down, never ever on his head. I take great care to never allow water to splash his ears especially.
I need both hands free to do this, THAT IS WHY i step on the leash,
as my dog's fur is so thick, to move his fur around to get the water
down to his skin. (even if cut short, my dogs fur is way way thick)
I calmly praise my dog the entire time i do this, nonstop calm praise.
My particular dog will do most anything if he is praised and praised and praised, nonstop calm praise. He's just like that.
(also, run water out of hose before you pour it on dog, as it may come out
hot from sunshine heating it up).
Then we IMMEDIATELY leave on our walk-------this helps dog associate the two things, getting wet = get a walk-------- and he does
not pant like he is dying, and instead, he walks just fine.

True, my dog intensely disliked being hosed at first

,
oh he sure did!!! So at first, i kept it real brief, jsut barely wetting him, til he got more used to it,
til he realized "getting wet means i get a walk!"
Now he gets thoroughly soaked, though.
But, overtime, he got used to it, and he began to associate "getting wet"
means "go for a walk".
