Amber wants her ex-mother-in-law to back off from her and her 4-year old son, accusing her of still being bitter over split with son Wiz Khalifa.
Gossip website TMZ is reporting that sources close to Amber say she's worried Katie Wimbush-Polk's hatred for her since splitting with son has 'spilled into the courtroom.’
Katie earlier was reported to have sued Amber for defamation, claiming Amber's allegation against her as an unfit grandmother is a malicious lie.
Reports are saying Amber believes it's just a revenge lawsuit because Katie can't let go of the fact Amber left her son three years ago, and Katie has tried to make Amber's life a living hell ever since the split.
Katie has been seen to take shots at Amber on social media, calling her out every chance she gets such as was the case with the Kardashian-Amber beef where Katie defended the Kardashians.
Amber is said to want a restraining order to keep her and Wiz's 4-year-old son, Sebastian, far away from Katie fearing that exposing Sebastian to Katie's hatred for Amber will hurt the kid.