Her level of intoxication matters. It's not a crime to have sex with a girl who has been drinking alcohol. It's a crime if she drank enough that she is unable to offer consent.That she was drunk is not really for debate. Both the crown and the defense have stated that. It looks like the defense attorney is trying to confuse the jury on the matter of law: i.e. make them forget that drunk people can't consent.
Here is another possibility, consistent with the evidence presented through May 8:
EM, a shy girl by her own admission, likes to have sex with strangers on occasion. She drinks alcohol before doing this, both to remove inhibitions, and to relieve herself of taking responsibility for the consequences of her actions. She may have consented to the porn star scenario while it was happening, but she felt regret after the fact. This may not be the most likely scenario, but it is a possible truth.
It's not uncommon for people to intentionally get drunk in order to act irresponsibly without feeling guilt afterwards. I have first hand experience with that, having grown up with a father who was an alcoholic in denial.