Seems a lot of people forget about oil in these cars we have 6 of them at the moment all with duff engines.
Too late to put a reserve on it but worth bidding yourself and then getting your sister to end it early with you as winning bidder. Then ring up a local scrap collector and she should get at least £100 for it.
And maybe she should think about using a different garage!
Thanks for the advise, I will pass it on.