Original title: Default email for sending video to facebook

Before I had my own Facebook account I had previously posted some pictures and videos on my mothers facebook account.  Now that I have my own facebook account everytime I go to post a video from my computer, or actually Windows Live posts it under her account.  It is like there is some default setting on my account that keeps taking me to her account??? How can I fix this.  I have logged her account out on my computer but if I choose post to facebook from  Windows Live Photo Gallery it posts it from her facebook account. Any suggestions