Push-over?

Ever feel like you're being taken advantage of?  Have you ever thought of yourself as a push-over? 

I have a friend, a really good friend, who made me feel bad today.  Okay, psychology majors... SHE didn't MAKE me feel bad.  I felt bad for telling her "maybe" instead of "yes."  I shouldn't feel bad, though.

Back story - She really is a great friend.  We've been there for each other through some very difficult times as well as the good times.  We both teach, and we share a passion for scrapbooking.  We often treat each other like sisters, play bickering, and such.

When we make plans to scrapbook at Archivers, we have to drive to Katy, the nearest store, where my sister lives.  It's about an hour drive, and it's an all-day thing.  We leave about 1 in the afternoon and get home at midnight, so it's something that takes some planning since I have a family and she's a single mom.  The last two times we scheduled a scrap event, she is the one who chose the date, and my sister and I worked our plans around her schedule, including a scrap night on my nephew's birthday weekend.  And the last two times, she bailed at the last minute, and my sister and I had already paid for our reservations, so of course, we had to go.

We are on spring break, and she is out of the state with her daughter visiting relatives.  She asked me if I would pick her up at the airport Sunday.  I've picked her and her daughter up from the airport before.  It's not that big of a deal, but I don't know what my plans are for Sunday yet, and if I commit to picking them up, then I CAN'T make any plans.  So, I told her I would have to wait and see, that we will probably be going to church, and I don't know what else.  She shot back, "We'll just take a cab."  I told her I would let her know when it's closer to Sunday depending on what I'm doing with my family.  She just said, "OK.  Thanks."

Does it sound like she's mad?  It does to me.  But, am I supposed to just plan my life around her plans?  How did she get to the airport in the first place?  Can't that person pick her up?  And why didn't she make arrangements before they left?  And am I the first person she calls when she wants to do something?  No.  She already made Easter plans with another friend, probably because the other friend is also a single mom, but she didn't ask me.  I feel like I'm giving, and she's taking, and I don't want to be taken advantage of.  Or... am I just blowing it out of proportion?  Re-reading this, it sounds like I'm whining.  Maybe I just need to let it roll off like water off a duck's back.  Who knows!