I can never see AnSh wanting to adopt as extension to social service.
and yeah., it depends on how you want to look at it, as it had not been clearly put forth on screen.
When A could not accept S as her husband, ppl criticized her, not wanting to move on, still thinking of J, loving him, CV's setting a bad example in showing divorcees regressive mindset, etc., etc.,
Yet they have never showed her reasons and feelings, and we have assumed our own, as per our u/standing of Anandi.
Here too., its the same case., a simpler emotion as per me.
All that she is wishing is to mother a child ( since she came across Anuja ) and the thought of giving a good life to an unfortunate acted as a catalyst to her want.
Per me, its nothing more than that.
I just do not want to think on the lines of social service being the motive behind this adoption.