Discrimination?

So, I went to commuter services to grab a map of downtown LA for my work friend J, who is going to the X games tonight.  It went a little awkwardly:

 

ME:  I need a map of downtown LA for my friend who is going to the X games.

 

HER:  Is she walking?  Here’s a map of the shuttle route.  Because if she’s like you she’ll want to take the shuttle.

 

Was that fat discrimination?  Implying I can’t walk 8 blocks?  (Because I can.) 

 

It’s like, how rude.