Well I can understand your problem.
Well the first bleeding might be due to her hymen
The second time when fingers were used for pleasure there might be few lacerations
and tearing here and there because the vaginal part is a very tender part and gets easily injured.
The brown blood might be sult of same.
Plz get her examined by a gynaecologist as it might be cervical erosion or a polyp.
Avoid contact for a few days which will give time for the injury
SE might require a few drugs.
Everything will be alright.