DD1 is the same as your DD wysiwyg. It takes so much effort for her to pedal. We're pretty slack on practice for her, but it's sort of hard to make her get on the bike when we know how hard she finds it. She's had a growth spurt so I should try again.

Have you tried her on something different? We have an antique trike here, all rusted up - DD1 can pedal that without a worry because she leans back more, where bikes are quite upright.