After Frankie loses Ulysses at the mall, she uses a pay phone to call Trish at her place. However, in her first car, there is a car-phone clearly visible on her dashboard. So, there would be no need to use a pay phone.
Dr. Peters says that Ulysses is reacting to Frankie oddly because Ulysses has never been exposed to a woman. Yet when Frankie is reviewing older video of Ulysses, a woman can clearly be seen at his birthday party.
The morning after the wedding, when Steve Marcus gets into Frankie's car, his tie is untied. He has a cast on his right arm and is filmed from behind when they are talking. When the camera angle flips, his left arm (only one mobile) has not moved, yet his tie has a Windsor knot.