Translation:The governor has two daughters who love rabbits.
No. Please se the explanation on relative pronouns: https://www.duolingo.com/skill/da/Pronouns-relative
The link is outdated; the new explanation is here: https://www.duolingo.com/skill/da/Pronouns-relative/tips-and-notes
Unfortunately, I think it is misleading, as it states "[...] der can only be used for objects". That must surely be wrong!