Like I said, you are in charge of the dates and I trust you on this one. As far as my character goes, after reading a bit of what you said I came with a more define personality for Ismaire and decided she joined the guild really young. She'd be, after the 4 year gap, about 19 years old. I don't mind if your character joined after, he could be younger or older, too. If someone joined after her, then that means she's not the newbie anymore and that probably will reflect in her interactions with the newer member. :P

I want her to be adult and responsible, but her young age and lack of experience will reflect in her actions and interactions. I've already got an aloof princess, no need for two. :P