Good to hear from you.
I tried looking up your post from Monday and couldn't find it. What happened (if you have time to tell me)?
Can you tell me when she cut herself? Can you take a picture and show me the wound?
I highly doubt that your aunt lost enough blood to require a transfusion, usually that happens with internal bleeding (such as car accident or gun shot wound). Even if your aunt became somewhat anemic after blood loss, she will be ok. Anemia can cause fatigue so it is more noticable in younger people but because your aunt is mostly bed-confined, it really won't make a dramatic difference for her. She can take some of those iron tablets you are taking if she is anemic.
Somehow I didn't get your reply until this morning.
Wow, that is a big cut. I am so sorry it happened, but the nurse is right, it is NOT your fault. Accidents happen to young and old and we just pick up the pieces and go on. Your aunt will be just fine. Her wound looks normal. It does not look infected. The slight seepage of blood or even clear fluid is normal. That happens as the tissue swell. The hematoma is also normal. That happens due to gravity - blood just pulls down the leg. She should have her leg elevated and if its been more then a week, you can now apply warm compresses to try and dissolve that blood. It will start turning different colors - from red/purple to green/yellow before it finally goes away.
I doubt that your aunt lost enough blood to make her anemic, let alone require a transfusion. I don't think you need to be concerned about it. The body rebuilds its own blood supply over a period of about 3 months. Since your aunt is not active around the house, even if she is anemic now, it will not have any affect on her health.
I think you can apply that "wound-be-gone" for the bed sore your aunt got. You can also ask for a prescription for Zinc cream which promotes skin healing (although it may be available over-the-counter).
I've never used a pressure mattress pad with anyone so I just don't know what the benefit of it would be.
I should have clarified - I meant to say that you can put wound-be-gone on the bed sore wound, not on the laceration. You don't need to put anything on the laceration. It looks like its healing really nice. They did a good job with stitching.