Earlier in the week, Laine claimed in a suit that she was promised by the late star that he would take care of her for the rest of her life. She claimed Vanessa left her out to dry after her son-in-law and granddaughter died in January.
But Vanessa took to her Instagram story Thursday to defend both her and Kobe's treatment of her mother over the past two decades.
'My mother is continuing to find ways to extort a financial windfall from our family,' she said in the post. 'I have supported her for nearly twenty years, and she was never my or Kobe's personal assistant, nor was she a nanny.'
Describing herself as a 'stay-at-home mother,' Vanessa asserted that she and her husband had always been the 'full-time care givers' for their daughters.
'For nearly two decades, we arranged for my mother to live in our nearby properties, at no cost to her because she claimed that she didn't have money to buy her own home after her divorce,' Vanessa continued.
Vanessa claimed that she and Kobe both decided that it was best that Sofia Laine not live in their home.
She said that while her mother did watch her granddaughters, Sofia Laine 'did not take care of business issues or expenses.'
'She now wants to back charge me $96 per hour for supposedly working 12 hours a day for 18 years for watching her grandchildren,' Vanessa said. 'In reality, she only occasionally babysat my older girls when they were toddlers.
'As of ten years ago, our kids were full time students and athletes and I didn't have another child until 2016.'
Denying the claims from her mother, calling them 'obviously false,' Vanessa said that she did still try to work things out with her mom.
'Contrary to what she's saying, I haven't left my children's side since the accident except to visit the cemetery to make arrangements,' she said.
'Earlier this year, I was looking for a new home for her and, a week later, she went on television and gave an interview disparaging our family and making false accusations while living rent-free in a gated apartment complex in Newport Coast.
'Even after that betrayal, I was willing to provide my mother with monthly support for the rest of her life and that wasn't good enough. She instead contacted me through intermediaries (contrary to what she claims, my phone number hasn't changed) and demanded $5 million, a house and a Mercedes SUV.
'Because I did not give in to her hurtful threats and monetary requests, she has spiraled out of control and is making false and absurd claims. She is now trying to get more money than my husband and I ever spent to provide for her while he was alive.'
Vanessa blasted her mother for having 'no regard' for how her actions were impacting her and her daughters.
'She wants to live off of my daughters and me for the rest of her life while continuing to collect monthly alimony from her ex-husband since 2004.
'My husband and I have never discouraged or kept her from providing for herself.
'This lawsuit is frivolous, disgraceful, and unimaginably hurtful. My husband never promised my mother anything, and he would be so disappointed in her behavior and lack of empathy.'
Laine's suit is seeking financial support from the 38-year-old widow, adding that in addition to being told she would be supported, she worked as an unpaid assistant and nanny to the couple.
