The former Eurovision contestant - who replaced Keisha, the band's last original member, last week - had to shut down her Twitter page after swarms of users on the social networking site bombarded her with angry messages.
Jade wrote: "Let's clear this up. I have never met Keisha in my whole life. We were never friends. I don't understand what she is trying to achieve by saying this."
Since leaving, Keisha has remained adamant it wasn't her decision to quit the band she had been part of for 11 years.
However, the 24-year-old singer has been thrown a musical life-line by Ne-Yo.
The R'n'B singer wants to work with Keisha and sent her a diamond-encrusted Chanel watch last weekend when she celebrated her birthday (30.09.09) early.
A source told Britain's Daily Mirror newspaper: "Ne-Yo has promised to take Keisha under his wing. She was showered with gifts on Saturday (26.09.09), but his was the biggest. He bought her a diamond-encrusted Chanel watch with a message engraved on the back, 'Happy Birthday to Keisha, a friend and a Survivor. This is your year. Ne-Yo.' "