Let us know what the outcome is from the Phone session...I have contacted a community law group also.
I have a free phone session today and i am going to go to a free turn up session on monday.
You haven't mentioned any existing parenting order or plan, so I assume you have none?
Basically, depression in & of itself is not the kind of reason a child should be withheld from regular contact.... If it were 80% of the countries parents wouldn't be seeing their kids in 2020... I guess there is one of 2 thuings going on
1) Mum has a genuine concern about the 6yo's safety .... You have assured & provided her with the Dr letter she wanted.. Still wants to see a lawyer though. Hmmm... That could just be talk, worry about if you get something
2) For some reason she is wanting to stop or change contact arrangements & this is just an excuse
Either way, you are in good shape as far as asking for & if necessary, getting continued contact as per normal should you have to pursue it legally.... Are you getting on okay with youngest, nothing happened recently?