If doctors have told her she needs to rest.. then make sure she does. I had to spend 9 weeks in hospital on bedrest with my first.. yes.. 9 weeks! And that was only for health of baby... no preg condition etc.. for growing and thriving reasons.. so i could carry baby as long as possible. He ended up being born by planned section at 34 weeks, weighing 3lbs. He is now huge strong healthy gorgeous lad!
If doctors havnt told her to rest... but your just being lovely hubby and worrying.. let her see her friends. she might need the chearing up! As everything can sometimes seem a little "blue" when pregnant.
My love to you both and your gorgeous little growing baby.