[X] White collar crime can often be the prelude to more violent crimes, and he's very likely associated with people that aren't so innocent. That said, some discreet contact would be possible. You have ways of securing phone calls and emails if needed. Take it from there and remember that you both have your own lives.
-[X] If he or his boss try to get Rosie into trouble, make sure she tells you. You can protect her, but only if she talks to you.
-[X] Use this opportunity to talk to Rosie about the Laws of Magic, why they are what they are, why they are enforced in the way they are, and what to do not to run afoul of them
--[X] Empathy excellency not to distress Rosie
[X] Sounds...complicated. Although re-establishing contact with her father himself is not likely dangerous, it's probably not her father she needs to worry about. As a virtual non-entity in her father's life who has had no contact with the man in well over a decade, her existence may be unknown, or more likely discounted, by his employers and the authorities who are acting against him. If Rosie changes that equation, both she and her unborn child become new variables which will be taken into account. The last thing anyone needs is for her or the baby to become leverage to be used against her father.
[X] White collar crime can often be the prelude to more violent crimes, and he's very likely associated with people that aren't so innocent. That said, some discreet contact would be possible. You have ways of securing phone calls and emails if needed. Take it from there and remember that you both have your own lives.