Thanks for the query to HCM.Miscarriage
, light headed , abdominal pain
,gagging,bleeding, sweating , all these symptoms are normal after miscarriage.
But your friend may have , dehydration
due to all these symptoms, so advise her take plenty of fluid or if possible 2-3 intravenous fluid .
As due to excessive sweating
there develops minerals loss , this must be compensated with I/V fluid.
The next reason may be hypotension
due to these symptoms so this is also important , get complete rest with full diet .
One more thing is important advise her to take some antibiotics after the advise of gynecologist as infection is very common after miscarriage .
In my opinion you must visit your friend personally and consult a gynecologist .