"Lissa, yes." Rose could be damn stubborn when she wanted to be, which was pretty much always. This was definitely a time when she wasn't going to back down, because it was obvious Lissa needed to feed. The last thing she wanted was to make this a habit or get addicted to the endorphins again, but they didn't have time to find a feeder this time. And one time wasn't going to hurt her. Much.
"We don't have time to find a willing donor and I don't want you passing out on me, Liss," she argued. "And don't try telling me you're not hungry, because even without the bond, I can tell when you need blood." Lissa wasn't hurt, Rose didn't think, but she looked seriously weak right now. It took a lot of self control not to demand to know what was wrong, but questions would only delay a feeding Rose knew she needed and badly. She didn't need a psychic bond to know that.
Lissa was right, too, that Rose would do anything for Lissa. She'd taken a bullet for her, without hesitation. She had literally thrown herself in front of Lissa, willing to give her life for her Moroi and she would do it again in an instant. Not just because they came first, but because this was Lissa. And giving up a little blood was a lot less painful than getting shot in the chest. Even now, about a year later, Rose could still remember pretty clearly how good a vampire bit felt.