Dear Mr./Ms. Bossname,
As we discussed, I am formally resigning from my position, effective in two weeks.
I regret that I must temporarily leave my position, but it is my hope to return as soon as my family issues are resolved. I appreciate the opportunity to be considered for rehire.
I have attempted to mitigate any inconvenience caused by my departure. I have notified all my clients, and also spoken to my colleagues on the team about taking over these accounts.
Thank you again for your support. I look forward to returning once my personal situation is resolved.