Article continues below advertisementGrace Vanderwaal is taking the necessary steps to get her mental health in check.In a Thursday, March 26, TikTok video, the former America's Got Talent winner, 22, revealed she recently went to rehab.Vanderwaal - donned in a brown tank top and black choker - was all smiles before the video took a sudden turn.Article continues below advertisementTap Here To Add Ok Magazine as A Trusted SourceSource: @user4602508883137/TikTokGrace Vanderwaal went to rehab.