Ok this could be quite long so here goes.
EW and I are separated and coparenting 2 children for past 2 years. We share custody with a 4/3 day split in her favour but school holidays are split 50/50 and I pay her child support of around 470 pounds per month. We split school meals and learning support costs for the children 50/50. We also share our maid/nanny 4/3 days but pay her salary 50/50.
Today she phoned me asking for half of the cost of a birthday present for our DS friend tomorrow (about 10 pounds each). I said that it should ideally come out of the money I pay each month as that is what it should be used for along with extra curricular activities (which cost 50pounds per month), clothes, food and bills for the extra day per week she has them.
It's not the cost of the present that bothers me. It's that she expects me to pay half of any extras without any appreciation of the fact that I'm already paying so much each month for these things. In addition to paying this, I also buy clothes for the children which often end up at her house, costumes for special days at school (e.g black shirt and dress for Queen's funeral) and last month I bought our DS a new pair of football boots. Whenever I take the children to hospital, I pay the insurance excess (about 13 pounds) as does she when she takes them (although in the past month I've paid more than 70 pounds for hospital visits and medication for the children) and I bought the present for the last party our DS went to. I never ask her to pay half of these small things as I find it pointless and petty to do so.
Anyway, she's now furious with me and is saying that she will contact a lawyer to suggest that the children's standard of living is being reduced because I'm not willing to pay half. This concerns me as she has lawyers in her family who will give her free legal advice and representation. It also concerns me as when we originally split up, she said she wanted 900 pounds per month plus half of ALL expenses (lunches, learning support, clubs, medical etc) so she could maintain her lifestyle and if I didn't pay it, she would take the kids back to her home country and I'd only ever see them for a couple of weeks during the summer holidays.
Some points to consider:
We both work abroad
She earns about 2300 pounds per month after tax
I earn 3400 pounds per month after tax so after my child support payment her income is 2770 per month and mine is 2930 per month
Big ticket items like school trips are split 50/50
AIBU to stand my ground over paying half of these small cost items that she is often asking for or should I just put my hand in my pocket?