Thatcher came to power when I was just about old enough to take notice. I had a country with a woman as head of state, a woman running the government and a single(divorced) working mother. I never questioned that a woman could do anything. I thought women literally ran the world and have never once thought myself inferior to a man. For that at least I'm grateful.
My mother thought she was excellent but I think that was a reaction to the strikes /rubbish / power cuts /3 day week / union power etc people have already mentioned coupled with a mentality that you strive for what you've got, life is hard and you don't look for help, you help yourself. I think also she was buying into the idea of personal responsibility rather than collective responsibility since she was entirely responsible for our household income....and didn't get, or actually expect, any other bugger to give a toss or help.
In addition, her father was sent down the pit in Wales as a youngster and hated every second of it - he could not get out of there fast enough, so when he was old enough, he did & went to London. I think it was a case of the family narrative being that they were fighting (working) their way out of the dirt and drudgery of the coal mine and aspiring to more / better. And not relying on anyone for help as a matter of what? Principal? Pride? (In a very Victorian way - ie it would be embarrassing and shameful to have to ask for help or to end up in the workhouse - loved the NHS but not any other State interference )
Working was the only way forward and I think that's what Thatcher tapped into with some of these people who loved her like my DM did from very working class backgrounds. (And bearing in mind DM got loads of stick for being a working mother in the 70's, never mind divorced - I think Maggie was a sort of role model in her mind, sticking it to a bunch of grey men in grey suits!!)