I'm sorry that was what you received when you were being supportive. For what it's worth, your responses seem, to me, very good. She might very well have reabsorbed considering the host of your son does, from what we gather, feel supported by you and know you are there. In that case that is a healthy, good thing. If she's "locked away" for some reason - that reason is also (probably) a good one - and a healthy choice for the system. So either way, if you look at that way - what you found out wasn't bad. It doesn't make it less uncomfortable and you're in full right to feel a bit deflated, though.
Hopefully they will find some answers as to what's happened to her - it seems important for the Protector(s) and thereby also the system in general. Like I've said before - it's a journey, and I'd like to say you are doing a good job walking
- Lin