Wren, I think that first photo is just a bad unflattering shot of her, we all have had pictures taken at the wrong moment where we look a bit freaky, I know I have. If you pause a digital TV on a young beautiful woman who's talking, she can look just terrible in that moment.
At 77 she does look great IMO, and pretty natural compared to some celebrities that went overboard on the facial surgeries. I think Tina only had some botox and eyelid lift, if I'm not mistaken....very common for anyone in front of cameras.