@Skinnyli, sounds like a wonderful time with your mum!
I do believe that home made foods are less likely to result in weight gain than commercially processed ones. Home made foods are generally prepared with whole foods and don't have all those additives. I think they are more filling. So although you had a wide range of goodies, perhaps you did not eat to excess (despite the chocolate!!)? And maybe you were busier than normal? And maybe your body is good at dealing with a bit of excess? Given you are not overweight, the chances are that your body does work pretty well in managing food consumed!!

I also found (during my initial weight loss journey) that keeping the cals low on a fast day helped - but that was more because I had let them creep up to 600+. Once I returned to less than 500, things got back on track. My TDEE is around 1800, so 500 seemed to work ok for me - tho it was a lot of veggie, and as I have said elsewhere, I feel that veggie cals "count less" than other sources.
@Debi Norton-Brown, tagging you in case you have not noticed our replies!