There had been absolutely no way Hannah would have been convinced to stay behind at the Leaky Cauldron. She'd been in this fight since she was fifteen when she willingly joined Dumbledore's Army and there had been no turning back. Besides, what would she do if Neville was taken from her and she hadn't even been there to possibly prevent it? There were so many reasons why she needed to fight and not enough reasons not to.
If she was perfectly honest, she'd have taken ten times the damage if it had meant keeping everyone else safe. That wasn't possible, though. People were hurt and dead and Hannah didn't even know whom. She could only hope with everything she had the Neville was alright. She'd have gone to find him herself if she'd been able to move. Unfortunately, her left thigh had been damaged pretty badly by the snakes fangs and venom making walking a nearly impossible task for her. Her right side from her collarbone down to just below her ribs was completely bandaged, too. Her bandages had to be changed pretty regularly, too, because the venom in the wounds was making it nearly impossible to heal quickly.
Luckily for Hannah, this same injury had happened before (though she wouldn't have wished it on her predecessor, Arthur Weasley), and the Healers knew how to heal her, though it would take some time.
Having to being woken nearly every hour or so, Hannah was tired and so she'd been mildly sleeping when Neville came in. She'd been asking after him every time the Healers came in, but they couldn't--or wouldn't--give her any information. The only reason she wasn't panicking was because of the potion they'd given her to calm her down. She opened her eyes when she heard her name, though, and as soon as she saw him, relief flooded her and she sat up just slightly as she couldn't sit up completely. "Sparky!" she grinned with so much relief and happiness that he was alive and walking, "I've been so worried about you."