Refusing to latch at almost 7 weeks

Victoria • 26, married to a wonderful man, mother to baby Mia.

My baby girl and I had a rough start to BF, my milk took awhile to come in. But for about a month we've been doing great. She latched, drank for a while at both breasts and was eating every 2 to 3 hours. Now all of a sudden, she's almost 7 weeks old and shes refusing to latch. I know shes hungry but when I put my nipple in her mouth she just screams louder, I even express milk into her mouth and she still cries. But when I get a bottle of expressed milk she drinks no problem. Is there something I can do to get her to latch again or is she telling me that shes done with me?