Why does this girl use 'lol' or 'ahhh!' so many times when talking on Facebook?

[TWB]

She uses those expressions almost all the time. While i do say some things that she may find humorous, she goes apeshit and says 'Oh dear! Ahhh! or 'aha haa'. Do most girls do this? Why is she texting like that?
i'm not asking if she likes me. I'm just wondering if she is overreacting.

[Aya]

Most girls are like this sorry to say. I mean it does not mean anything at all just texting lol.

[jesus_disciple777]

Many girls are just plain air heads and this is one of them.

[just me]

I'm assuming this is a girl that is a young teenager in which case, yes they all talk like that.

[Eden]

I think she might like you, I know that's not what you asked. She probably is trying to lighten the conversation, she doesn't want you to think she doesn't care. Im not sure if that's true, but it kinda sounds similar to what my friends and I do to keep things interesting.

[M]

She's probably just using these phrases to make her responses have more expression....she probably doesn't mean anything by them and I'd say it's pretty common.