Is this emotional manipulation?

My mother in law has been manipulative in the past... usually using guilt trips or pressure to make us do what she wants. "Everyone else is going", "Well grandpa is getting older.. it might be the last chance you get to see him.." - they have said that for the past 6 years btw.

But I'm pregnant and hormonal. I'm supper annoyed. Is this being shady or nah? We're leaving tomorrow morning and I am cooking all day and packing so it's not really possible..

And they really don't have health issues right now they're just getting up there in years.

Thanks!