How do u get an old friend back

Last năm my friend got mad at me but didn't telme y I found out later it was becuz she was jealous of me hanging out with her friend so we got in a fight now I this năm I asked her and she đã đưa ý kiến yes but we barely hangout she could have been faking how do I get her back plz give me actuall các câu trả lời instead of crap !!!