I’m sure I’m not unreasonable but I thought I’d ask for opinions!
It is rude and presumptuous to drive to somebody’s house, ring them up and say “I’m outside can you come outside and see me? I haven’t seen you in over a week!” Right? Especially when you know that at 4pm, the person you’ve rocked up to see has just got in from the school run and is likely to just be starting to cook tea. And also when you know that person is also heavily pregnant, exhausted AND overdue to boot?!
It’s my mum. She does this all the time! Will appear outside my house about 4pm and demand that I go outside to see her. She’s very overweight/disabled so she struggles to get out the car to come to the house. I’ve just upset her because she asked me to go outside and I said no because of the above reasons I mentioned, pregnant/tired/cooking. She then said she’d come in for a few minutes so I sighed and said “If you must, but I am busy!” (So no time to entertain her really!) and she snapped “Fine! I won’t bother!” And hung up 
FWIW we’re seeing her on Sunday so it’s not like she’s going to have to wait for weeks until she sees us, just 3 more days 