4 month old won't latch

Erin • Mama to 3 beautiful girls
Yesterday we had a tough time with latching, but she finally started latching later in the afternoon/evening. 
Today, we got to my in laws (they live 4 hours away..first time my 4 month old has been out of our town) and she has not been latching all day. We tried the first time at home..the rest of the times I've tried feeding her we have been at my father in laws house. 
It's been bottles all day. 
I'm so frustrated and sad that she isn't latching.
Could it be because we are in a new place? We're going to be here for two nights. I'm so worried and stressed out about this :( 
Someone please help :(