How can I tempt my cat to eat? ):?

My cat has swelling of the intestine which may or may not be cancerous. The vet wants to operate but say she can't until she's healthy enough to, she's given our cat steroids but we can't make her take them ): She ate a little yesterday but only a tiny amount ]: we;ve got a selection of things but I was wondering if anyone's had a similar situation and something that worked for them? ]: she looks all folorn I hate it ]':