The first thing I'd do is figure out whether she's having trouble getting out of bed because she's too tired. Most kids I've known fall into one of two camps: the ones that wake up on their own and are bright and chippy nearly right away, usually too much so for the parents; and the ones who don't wake up on their own, have to be woken up, and are very challenging to help get ready in the morning.
If she's in the second group, then she may not be getting enough sleep. Is it possible to move to a slightly earlier bedtime? Even a half hour might be enough. Or, is it possible her sleep is not sufficiently good quality? A better mattress, a change in temperature (too warm or too cold are both bad for sleep), or a white noise machine to help cover noises (particularly if you're on a street that has some traffic but not enough to become white noise itself) all may help.
This is particularly likely if she wakes up much better on days where she can get up at her leisure (on a weekend, perhaps). If she's not getting enough sleep, then it's not terribly surprising she has trouble getting up and getting moving. I certainly have trouble getting up and moving when I've not slept enough, and I've had decades to practice.
If you can't really fix the sleepiness, you can try what we do. My oldest in particular can't go to bed earlier than he does; his circadian rhythm is just wrong for a normal school schedule, so he's inevitably tired in the mornings. During the winter in particular, we wake him up in stages. Begin waking him up at 6:30 or so - light on in the room, a few words to help him stir. Then 6:45 after I've showered I give him another go. Then, again at 7 a third time, now we usually get him awake, and capable of dressing himself and getting up - particularly with the promise of breakfast downstairs. Waking up in stages is much easier for most people of any age; that way, she's not coming out of a deep sleep and instantly expected to be awake.