My ex g.f is showing attitude and it's just too much ?

for some reason we end up being in same room while working,but she is like she doesn't touch stuff which I touched,she hesitates to be around place I have been there earlier,avoids facing my direction while talking to someone and even avoids reflection of me in mirror,i don't acknowledge her and maintain my distance form her still I feel it's too much
My ex g.f is showing attitude and it's just too much ?
Post Opinion