Is it that hard to learn the english language?

So I walked into work this morning and asked Mel something, and instead of replying with "possibly" she said "possibility".

And then she just updated Nabils resume for me, and instead of saying "its been updated" she said "its been upgraded".

GOOD LORD

Oh and instead of saying "that" she says "what".

Eg "Laurie remember that report what I emailed you?".