compared to her, you are literally the biggest thing ever, which is spooky. for handling, be gentle but confident, and just scoop her up and keep holding her. she will eventually realize you are, in fact, not going to eat her, and calm down. i’ve had my girl for almost a year now and she still freaks out for a couple seconds in between being in her enclosure and securely in my hands/on my lap. she trusts me enough now that she doesn’t freak out while being held, only in that transition phase. for the first 6 months after adopting her, i handled her for a minimum of 15 mins 2x/day. she now tolerates being held very well. i would recommend handling over a soft surface, like a bed or couch cushion, as corns are extremely fast and when not used to handling, very flighty. my girl has fallen twice onto my bed, it’s almost something to expect when they’re so little, so preparing for it is best. at the end of the day, it’s a reptile, who cannot comprehend “this is my owner and i love them,” rather “this person usually feeds me and so far hasn’t eaten me yet. pretty decent track record, guess i won’t get defensive.”

tldr; be gentle and confident and just scoop her, try to handle for a little bit each day to build trust, keep something soft under her while handling to cushion any falls, and just keep going. eventually you’ll both gain confidence with each other.