Grandmother fell down stairs need tips?

A couple of days ago my grandmother was going to the basement to get some clothes out of the washer, and she fell down the stairs but she caught herself a little. She went down a couple stairs on her , but other than that she is ok. My grandmother complains about her ankle which is okay. But, it is swelled a big amount over the last few days. Her ankle is nothing compared to her backside (or her ). On her crack there is a heart-shaped bruise. She has trouble sitting, walking, etc. I need tips on how to keep her swelling down, and how to make her feel better. I already no to put ice on her troubled areas and that she needs to sit down. I need your tips. Thanks!