Personal drama ensues . . .

[Sundae]

I am baffled by the predominance of restraining orders in US divorces, so I can't offer any real advice.

But stick in there Cloud. Surely a hands-on Grandma has to weigh in her favour.
Also, fair or not, the parent with "possession" of the child tends to be favoured. Can your daughter come & mooch off you for a while? Mother plus Grandma plus son already settled in one abode surely has to mean something?

Apologies to any fathers whose children were taken in this way - I'm not saying it's right, just that if Cloud is willing to take her Grandson anyway, at least the child will also have one parent present through the upheaval.