Yes if your aunt is a mother then you can send her a card.but if you just want a greetings card you can log on to 123Greetings and select the category you want.but your aunt or the person you send the card to will receive the card as an email and will also be able to see the card.poems also available at 123Greetings.
You could search on like yahoo or google for mothers day poems for aunts.
Yes there will be at walmart so I heard
Look them up in google I got a few free poems about sister off there
Here is a link from where you can get plenty of poems on Mother's day specifically for aunts: