We got a bedroom door installed that has a kitty door built into it.  Archer has taken to opening it no problem, but Lana doesn’t want to push it to start the process of going through.  If I crack it open she will squeeze through.  We tried keeping her out last night, to try to get her to force her way in, but that didn’t work.  I opened the door for her when I got up so that she could snuggle with Stephanie for a bit.  Archer was fine with coming in and out during the night.