Spider Bite!!?

My Mother Got a Sipiber bite(we can point out the Bite marks)
Around the bite marks its RED and HARD And surrounded by the Area where she get biten its Starting to get black. You can even see it sinking within.
Ummm.. we have no clue what spider it is and we search all over the internet and cant find the sipder or anthing related to the symptoms.
The Skin looks close to this image below But not As Black.
http://www.spiderbitetreatment.com/image.
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+symptoms
-Itching
-Sore
Any Answers. ASAP please That is a brown outsider spider bite and she needs to turn to the doctor. It will continue to raison d`¨otre necrosis (tissue death) around the affected nouns. Possibly even causing a obligation for amputation. Go to the doctor right away. The red area is the inflammed nouns and is infected the red area will verbs to grow turning black as the toxins spread. The black area is limp tissue and this will continue to spread as all right.
Go to the doctor.
omg, that could be a brown recluse, if the skin is getting black that channel it could be dying, get her * to the hospital
Sounds approaching a brown recluse spider bite. Get to the doctor.
It might be Brown Recluse Spider, where on earth do you live? If in the South it is more expected. See a Doc asap.
sounds like a Brown Recluse. Better seize it looked at.
Could be a brown recluse bite. This requires on the spot attention, as the tissue surrounding the bite could die (necrotizing faciitis). GO TO A HOPSITAL OR DOCTOR
If the skin around is tarting to die (turning black) i would say it's the dreaded brown solitary person spider bite. Symtpoms of brown recluse spider bites usually appear in 24 hours of the bite. I would get to the dr as soon as possible. Good luck.