have they ever come and gone before? mine wander, sometimes. well, only Lola, so far, but She likes the freedom. you know them better than anyone, so if they're not using the silent treatment, i would be inclined to say stress. i presume you've tried talking/interacting. do they understand what's going on, why this is something that could be beneficial? it may not remove the stress, but maybe a clear explanation could smooth things over, even if you don't declare it directly. say it, let it float and see what happens.

i've removed myself from all possibilites of having to explain myself - it would be practically impossible now. but i remember in older days, when i had less to explain, it was certainly stressful. i was a good bullshitter, but the resentment, confusion i felt at being forced to put myself in the position of just being written off as CA-RAZY! i hope all goes well, everyone is okay and you get the assistance you need.