Do you think it's weird that this woman is being so reluctant with some basic info about herself?

A bunch of things came up so we didn't see each other for a month, but we've been talking for like a month and a half and met four times so far. I finally got what she says is her regular phone #, it was only google voice before, and she still needs to think about giving me her last name...
Do you think it's weird that this woman is being so reluctant with some basic info about herself?
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