What Is The Remedy For Bruises?

My daughter hit her face really hard on the Refrig. 2 weeks ago leaving a huge bruise around her eye and cheek.. it mostly went away but there is still a bruise where she initially hit her face and a lump under it and a noticeable light bruise on her cheek still. It got better but I am still worried.. will it go away? What is this lump? My daughter is 4 and also has unwanted bruises on her legs only that's been happening for over a year now and although she is accident prone, I have no idea where she's getting them from and y? Please help!