How do you handle a woman (30F) who rejected you (28M), asking for pictures of the girl your currently seeing/talking to?

Woman in question is my co worker (30F) enquiring about the girl who I'm (28M) currently talking to.

Backstory for those concerned: Me and my co worker bought each other Christmas presents, she gave me her phone number, I asked her out but she had Church and her mum wanted her to stay local. We still talk and she tells me her mother "is looking forward to meeting me" and wants me to visit their home with her.

Co worker then asks to meet me and we talk on the phone for near an hour. We were due to meet Wednesday but on the day she postponed to Friday. Told me she was "kinda starting dating a guy in her street" (it's her neighbour) but still wanted to go on a date as a friend. I told her no and gave her the decision of him or me. She choose him naturally considering I live on the other end of the city.

A month passes and we don't talk or work on the same shift but I hear she's been asking about me. We then end up working together and she complains about us not talking anymore, I told her I was just busy. Not that she made any effort to contact me by the way. Right after that she plays 50 questions asking if I'm talking/seeing anyone and I said yeah. Wanted to see pictures of her, where she lived, when was I meeting her among other things. I asked why she wanted to know. "Just making conversation", yeah doubt it. Don't understand why she thinks it's any of her business after everything and she'll most likely bring it up again. How do I handle her?
How do you handle a woman (30F) who rejected you (28M), asking for pictures of the girl your currently seeing/talking to?
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