Your text is so small that it strains my eyes to read it. Could you change?
Also had an PB idea for the twins' father.
Mentor/Assistant/babysitter for Vance - consider Horace... if Vance doesn't realize he's an Alchemist?
Horace was also the father's friend (who also didn't know what Horace did), and will come to pay his condolences once he discovers about the twins' loss.