Donald Trump’s attorney Susan Necheles was dogged in her pursuit of Stormy Daniels on the witness stand Thursday — and experts warned her approach could backfire. In day 14 of Trump’s trial over charges that he falsified business records involving a hush money deal with Daniels in 2016, Necheles hammered Daniels on everything from discrepancies about whether they ate dinner during a tryst to what was, and wasn’t, the adult movie star’s signature. Legal analysts on MSNBC argued that there’s a line between a persistent cross examination and something that could make the jury more sympathetic to …