Just a general question. I don't see a tutorial for the locative case. It has been a bit confusing trying to reason it out. I finally went to Wikipedia for the grammer. Are they planning a tutorial for locative?
Darn English and its lack of genders! You are correct. BUT in this case, you would have to say "...v její posteli", since for some reason he is, apparently, in a bed that belongs to a female, so just saying "v posteli" is not going to cut it.