I'm not sure which of the following is correct because I've seen both used in the same context:

I look up from his body to Sarah.

or

I look up from his body at Sarah.

If I take the 'from his body' away and analyse the sentence without it, I would say the right answer would be, I look up at Caroline. If I say I look up to Caroline, it alters the meaning.

However, since my searching has revealed both uses, I don't trust my instincts.

Which is right?

I'm not sure which of the following is correct because I've seen both used in the same context:

I look up from his body to Sarah.

or

I look up from his body at Sarah.

If I take the 'from his body' away and analyse the sentence without it, I would say the right answer would be, I look up at Sarah. If I say I look up to Sarah, it alters the meaning.

However, since my searching has revealed both uses, I don't trust my instincts.

Which is right?