I have never denied there are bad step mums, of course there are. Just like there are bad mums, bad dads, bad grandparents and so on and so forth.
However, i think most stepmums are just trying to navigate and impossible path. Its the hardest job ever. Its awful and its not very rewarding in most cases. This is not always because of the children involved, either.
For me, the money was always an issue. We had the same as other posters that dps ex really ramped up the "we are so poor" act when dp got with me. She told her child "daddy is taking Trust on holiday, daddy is buying trust a house, daddy cant afford to buy yuo xyz because of trust"
When actually in the first few years dp was so skint paying her maintenance plus pretty much everything else, that it was actually me taking him on holiday, me putting down most of the deposit for the house, me buying things, not him, because he couldnt. He walked away with less than 4k from a house that he alone had paid for. She was having a bloody laugh thinking he was rolling in it.
As time has gone one, every time we have had a new house (only once!) a new car, a holiday, a weekend away or whatever she has text asking for more money because "if you can afford xyz youre not paying enough" - every single new years day for 7 years she text dp asking why he hadnt paid maintenance and every new years day for 7 years he replied to her explaining what a bank holiday was. It has been relentless.
When dss moved in with us for almost 2 years - she paid less than £30 a week in maintenance for him, no extras - not even £20 for spending on holidays we took him on. Absolutely fuck all. We only once ever asked for a contribution for uniform and got told "you have two wages coming in you can afford it" and yes, that was true, we could, but it was a massive double standard.
Shes got more front than bloody blackpool and i cannot imagine ever being so self centred, greedy and rude.