She said I'm all yours?

I've been on a couple of really nice dates with this girl. Things have gone really well, lots of comparability, things feel comfortable and not forced.

I suggested a third date to which she eagerly accepted and thanked me for inviting her again. She seemed a bit surprised actually.

I was making the reservation and asked if she wanted an outdoor seat to which she replied, the weather will be bad.

So I rolled with it and said "Inside then!" With a laughing emoji.

She follows up with "I'm all yours."

Surprised me a little bit because it could mean any number of things.

But in this situation I don't know, is she just Expressing enthusiasm?
She said I'm all yours?
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