One of my granddaughters was like that, but at about a year old. There was absolutely no consoling her, in fact, she angrily pushed me away. I tried everything, took her out in the pushchair, tried to rock her to sleep etc. Her older brother and sister tried everything too. Eventually, I had to give up as she wouldn't eat or drink at all. I thought that she must be ill.
My daughter had to rush back from the wedding she was bridesmaid for, a two hour drive. As soon as she arrived, GD was smiling, laughing, drinking and eating!
What worked for us (experts may say it's all wrong) was to cut out the goodbyes. My daughter would sneak out, and when she noticed I'd just say 'Its' OK, she'll be back in a minute' and ignore her protests. I'd carry on as normal. My daughter always leaves her handbag here - very important, it seems! We did five minutes, then ten, twenty etc. of absences that way. Now that she's nearly three, she accepts the situation, although still not exactly happy about it, she no longer cries!