It's one thing watching a film and that's all very nice and pleasant but it's another watching a girl watching the film and reacting to it, especially when that girl is eastern European. Her accented English is sweet and amusing for one reason only - that she is ultrasensitively wanting to be taken as American, which of course she's not.
She should not try to lose that accent. Also, her manner is so female, not a trace of butchness or Clara Oswald wisecracking - it seems the commenters appreciated that too.
So it's quite fun seeing how she would react to Python humour. Just a note - she jumps the film forward, jumpcuts everywhere - maybe cut her some slack on that.
YT latched onto me running that above and supplied this as well below. Oh my goodness, it's a [nearly] local lass - talk about accents this evening. Same film, just sooooo different from [to?] the eastern European girl. See if you can see the differences in manner, choices.