What does it mean if an older female coworker shows she's always happy to see me and touches me?

I have a coworker that pays special attention to me. She's 36 I'm 25. She shows she's always happy to see me lights up seeing me showing a positive attitude. She tries to relate to me. She has been quick to touch me on my arm and back. She has been eager to make conversation and cheer me up. Just want to know thoughts if she thinks I'm cute or something. Is she flirting? I've known her a month.
What does it mean if an older female coworker shows she's always happy to see me and touches me?
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