Is Syndra able to Force Choke someone?

Only if they call her ''Mistress'' and lustfully moan and beg for punishment.

I just had a flash image of Syndra choking her player that didn't perform well while saying "I find your lack of skill disturbing"

Darth Vader theme song approaches

She choked on my.........

Red buff

Syndra seems to be a gravity/force based mage. So I'd say quite easily.

Oh boy, I can imagine much worse things like snatching the head and crushing the body. She can lift a fortress to sky and make it stable with only her mind, are you really asking for something like this? xd

She seems likely the most powerful mortal human in the lore and her powers are (telekinesis and dark energy) superior than force.