I'm guessing that you're don't live in what was her constituency until recently. Believe me, there is no need to turn to ageism or sexism to dislike her. There are more reasons than I can count, and even the most Tory of Tories in the constituency could barely speak her name without spitting. She's a dreadful person.
Of course writing this book was what she was doing instead of representing us, her constituents. She closed her office, and hasn't held a surgery here for 18 months. So now, after 94 years of Tory MPs, we now have a very personable Labour MP. If you know this area you'd know that no-one would ever have bet on that. And it's the local fury against Mad Nad that enabled that.