What do you think of this reaction from a girl when I just farted?

I just farted at university and this girl just cracked up laughing and laughing and laughing and had trouble stopping. Then she said "I'm (meaning her) so immature" and laughed some more.

To me this is the prefect girlfriend because she is not uptight about bodily functions. I mean we all have to do it.

Please do not be mean I am just wondering would you find this girl fun to be around or would you not like her being around a girl that finds farting so funny.
What do you think of this reaction from a girl when I just farted?
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