Hi harleysnana
It was this bit
Her failure to get moving we (other daughter and husband) believe that can be attributed to Harley being left in a swing or other restraining items most of the time. I'm not knocking my son in law who up until now was a stay at home Dad. We all adore Harley and I am sure he was thinking "if she's happy why mess with it". Once the TV was off and she was on the floor all day she crawled on day 3.
I didn't say you had criticised them to their faces - just that they had probably picked up that you thought Harley was slow at becoming mobile because of the way your SiL looked after her.
Remember that only 7% of communication is verbal - most of it is by gestures, facial expression, body language etc. So your DD and SiL may well have sensed the rest of the family's disapproval even if no one actually said anything.
But I'm glad you feel better and I think your game plan is definitely the way to go. 
How to Keep Living at Home Longer


. I hope the talk goes well , I would imagine they will grumble between themselves for a bit but then see what a treasure you are xx


