Hi and Welcome! I had a hard time when Ziggy was a baby. He was like a kangaroo at bath time and hated brushing. I was afraid to put him on a table for fear he would jump...and he would.
He now loves it. It just takes being gentle and patience...try offering Lexie a treat if she stands still for a minute or two. It's just so new to her.
The potty pen sounds like a great idea. Especially if there is a pad in there where she can smell where she peed before. Think I'll try that for the new baby boy we're getting. Thanks.