Don, I'm sorry to hear this. It sounds like your DW is in good hands, hopefully she stays well and your precious twins can hold off on joining us for a few more weeks!
My thoughts and prayers are with you and your wife.
Sounds like her drs are really on top of things!! Great weights for twins at 34 weeks, my singleton was measuring 4.5 lbs at 34 weeks. Lots of that things continue to go well!