If tenang also means relax, the my answer 'mother's smile always makes me relax' should be acceptable
The meaning of "relax" is more similar to "santai".
Mother's smile always makes me relax = Senyuman ibu selalu membuatku santai
Why can't I say mother's smile always makes me calm? It's a perfectly logical and acceptable English expression that fits perfectly
Always makes me calm is accepted
Not for me...