I think it is very odd - and not cause of any moral or value based judgements.
A woman - married or single and no matter in which part of the world - will take a few hours or days to come to terms with an unplanned pregnancy. A baby does mean that a huge change is going to come into your life.
If you are young, single, needing 9 hours of beauty sleep and find out you are pregnant, you will pause and maybe even panic. you don't distribute sweets and make plans to call your conservative Lucknow-based mum and break the news about a grandchild out of wedlock. That is ridiculous. It can only point to Sam playing some kind of game or her being a really spoilt silly kid... which may also be possible.