Help me help my neighbor

[Halothane]

So my neighbor knows I like watches and she has asked me to help find her a watch. She dresses nice, classy, interior designer, maybe 50 y/o.
She wants something in yellow or rose gold with an lighter brown alligator strap and has a budget of 9k or so.

She found a Cartier Tank Louis online she likes. 9k with quartz movement. I don't know anything about Cartier- I told it seems like a nice watch but would likely lose value quickly if she bought new at retail. She would probably never sell it, so maybe not a factor.

Any suggestions on watches to show her in this range and category? If she wants the Cartier should I try to get new from online sellers? Jomasshop?
Is Rolex Cellini (39mm) too big for a small framed woman?

Not a whole lot here on the classifieds as I would assume womens watches like this are generaly slow movers. Unfortunately, we don't live in an area she can try on much. I will travel to Dallas in a couple weeks and could look and send her pics.

Thanks in advance for any advice/help.