I would have gotten complaints if the expressions did not work for others, so no, they seem to work fine in general. I'm really sorry that they do not for you
You don't even have to penerate her. You should see something in idle too, if not more, cause the expressions are handled differently in this case. I you just slide a dildo tip in without moving it, the stimuli might be very minor. But some morphs should be active nonetheless. Keep in mind that the morphs tab does not auto update if OnlyActive is selected. Toggle it on and off to be up to date.