Look, you can not show her you are angry because those are emotions. Women show emotions it is a feminem quality. About the chemistry issue, you need to be more sexual with her and send her naughty text.I got ghosted by some girl I was dating, she told me there was no chemistry. I kept trying and contacted her atleast once a week. Not every day. I showed that I was angry then I did research, read some books about dating then I hid my anger . She ignored my text and call sometimes and one day I just said some naughty things in text. Then she finally seemed enthusiastic and asked when are we going to hang out and when I'm going to make time for her. Women want a playful naughty man. If you dont act like that they will percieve you as boring and if you get emotional they will percieve you as weak. No woman wants a weak, emotional, boring man. You need to text her something dirty regardless if she has another man I guarantee she will sound enthusiastic. I speak from recent experience .