Do Netherland Dwarf bunnies sleep with their eyes open?

by h.vantassel
(Canada)

Hi
I know this might seem like a strange question but we are fostering a ND (Lavender) and have never had a rabbit before. Lavender is very timid and extremely quiet. She lived with a companion since she was young and her companion passed away. The owners no longer wanted her, so we adopted her.
We never see her with her eyes closed...morning, evening , ever. We never see her sleep and we never see eyes closed.

Would anyone be able to shed some light on this ? I would appreciate any thoughts. Also, would a ND get along with a hamster? Apparently, they are good with Guinea Pigs...maybe she is lonely.

Thank you so much, Heather