How physically strong is Mavuika?

Just realized that she literally lifts her bike and smashes it to the ground on her last normal attack and got me thinking on how heavy it is. Since from her story, the flamestrider should be compatible with Pyro and with how they reverse-engineered the source mechanisms, the flamestrider might weight as much as a source mechanism with the same size. Is Mavuika really also physically strong that she is able to lift the flamestrider with ease or was she able to lift it just because of the bike's compatibility with Pyro?