What should I say to my pregnant sister?

Question

I'm going shopping with my mom and my sister (Margaret) tomorow. My pregnant sister (Josophine) called and invited her self to come with us. I love Josophine, and I know she's bored being pregnant and wants to come, but the trouble is, she wants to go home after 20 minuites of shopping, and does nothing but complain the whole time. She is also bringing my 1 year old nephew along. I want to spend time with her, but she does this everytime without fail. She'll say "I'm pregnant let's go eat" or "I'm tired let's sit down" But I have to school shop because I'm going to be on vacation until school starts.How do I politely un-invite her? Please help! :]

Answer 1

I guess a lie is the best solution. Tell her that you cancelled your shopping spree because you got invited to one of your friend's birthday.

Answer 2

well, tell her that i have to shop for school supplies and tell her that you will go shopping with her next time  

Answer 3

Just tell her, "Now you do understand that we will be shopping for awhile because I need things for school? We will be out for a few hours if your ok with that you can come along but I am worried that you will get tired before we are done! This will let her know right up front how long you will be. If she does come and start whining that is when you say, I warned you that we would be here awhile and you came anyway!

Then the burden is on her!