to be a little bit surprised

[eli7]

Greetings,

Imagine a situation in which a guy asks a girl out to know her more. Once he says this, the girl doesn't expect that, so what would be the proper reactions putting into words?
Can she say, "Oh, I'm a little bit surprised!"?
(Is "I'm a little surprised, a correct sentence since I have omitted "bit"?)
What else could be right in this situation.

Thanks

 

[Greyfriar]

She might say, to be polite - 'Oh, that's a nice surprise, where are we going?'

 

[eli7]

Thanks, actually she is not going to accept his request. What would be the answers then?

 

[sound shift]

Yes, "I'm a little surprised" is fine.

 

[eli7]

Yes, "I'm a little surprised" is fine.

Thank you sound shift

Are there more possibilities to this situation?