Sorry to be vague but If you have teens in your family (16) who you have no contact with due to difficult family dynamics, this none contact has been for a year and a half, after having regular contact, do you continue to send birthday presents and Xmas presents (basically just cash) even though you have no contact in return. No thank you message, nothing, and neither does your elderly mother who previously did a lot for said children. I’m inclined to think it’s never the child’s fault and an adult should be consistent in their message (ie keep sending the gifts and money) as we don’t know what influences are on the child but it also feels wrong. My friends say ‘f*ck that!’ don’t keep sending money but to reduce my usual gift to just a card feels harsh.