This passage is from The Children's Bach by Helen Garner
‘She was wearing these daggy flares,’ said Elizabeth, ‘with embroidered insets.’
‘I got my hand jammed between two speaker boxes,’ said Philip. ‘My finger burst like a sausage.’
‘You know?’ said Vicki. ‘One of those horror movies where she drives up to this house and gets dismembered?’
‘I got to Reno on the bus at eight o’clock in the morning,’ said Philip. People were stumbling about the streets in full evening dress.’
‘She had all the colour and dynamism of a parsnip,’ said Elizabeth. ‘You could not by any stretch of the imagination drum up feelings of sisterhood for her.’
I search on the net about the meaning of "parsnip" and I find this:
To have a parsnip mean "something that gives you much happiness"
Does the whole phrase in bold mean:
She was very happy and active that you never feel sorry for her?
She could make a good and happy friend that being with her make you happy and because of that you never feel pity for her and never thought of her as if she is your sister?