"I'm sure she won't mind" should be accepted.
la = her ??
Yes. Direct object personal pronoun, 3rd person singular feminine.
Thank-you. I find it very confusing when to use la vs elle vs lui in reference to a female person.
Elle te plaît ? Appelle-la et donne-lui rendez-vous.
why is it appelle la here instead of l'appelle?
It's the imperative form. (A command).
Is this sarcasm?
"Call her I'm sure it won't bother her" was accepted.
The "Oscar" voice appears to say "… que ce ne la gênera pas." rather than "… que ça ne la gênera pas.". Fortunately, I realised in time that "ce" would be grammatically incorrect.