I have 2 stepchildren (one DSS (23) and one DSD (21)) and a DD (17). DSS is NC due to extreme bad behaviour and now DSD is demanding money for a postgrad course - we have already paid 1st installment which was supposed to be our total commitment but she (always) uses emotional blackmail and manipulates her dad to get her own way - and she is now threatening to go NC or give up her course.
DP is very upset as I always stand up to her and he wants to ensure she has as much as he can give - AIBU to not give in to her demands - she won't speak to me and doesn't include me on cards etc even through the money for her first course installment was actually paid for by me (I got no thanks).
DP has told her to call me, rather than him, as he gets really upset by what she says and does not stand up to her (she knows this) which I don't think she will do, she will just keep up the emotional blackmail/tears until he caves in and either his parents or we will have to pay.
DP says I will get the same demands from DD when she goes to uni, so we should pay up, but i think that we agreed to only pay the first installment and to stick by that - she shouldn't get money when she threatens him - DP is worried he will lose contact with her as well as being NC with his son.