Confused

I'm not sure if anyone reads this or not. If you do could you answer this query I have please.

I have not seen Ian @ Lorna since 17/6/1968! This being the day after my Mum died. At that point they were taken to St Andrews, The James McKenzie Clinic. Along with my other brother Paul. Paul and I were re-united around the 22/6/1968. For which I am eternally gratefull!!!

However My Foster Mother was allowed access to Ian @ Lorna after that sometime between 17/6 @ the beginning of the 1969.

My question is,

Why was she allowed that access when my brother (Paul) and I were refused ever since my mum died any access at all?

Does anyone think was acceptable?