The tie in with the Apothecary and Hazel works well. Cinder is an attractive and easily liked young gnome in her threens (30s) who has set off to human lands looking for adventure and to help people and nature where she encounters problems. She is quick to smile and lend a hand, generous to both friends and stranger alike, and slow to anger. But when she does anger she his quite the "hot" temper. She would likely be helping Hazel for room and board and both teaching her and learning from her both herbal arts and healing skills in general.
She looks like her icon as well, except for that he hair is fire red.
I think she will forgo the animal companion in favor of the fire domain. This is a role playing decision and will cost her later. But at low levels it might be handy to have more fire to throw around. :)