Why do women play games or play mind games?

Long story short my ex been ignoring me and texting back every other double text I send. We ben broken up since Jan but since this virus hit and her kids left she got distance from me. She suffers from depression and when
She stopped talking to me she said she getting me used to her not being around anymore. Recently a few months later something happened with tinder her toxic friend (she mad a tinder of my to talk to guys) found my old tinder I don’t use and I was supppse to see my ex for her birthday but she told me “I’m good” after seeing that I then gave up and said I’m sorry for the account and I’ll just delete your number and leave her alone cuz she ignored my previous text then she replied with “wow ok” as if that upset her, when she doesn’t talk to me anyways. I told her I would if that’s what she wanted and she said she has had ex who said that and didn’t and I told her I will delete the number if that what she wants and she replied with “I didn’t say that” she was vague and didn’t tell me anytning after that. LIKE I DONT UNDERSTAND WHAT SHE WANTS
Why do women play games or play mind games?
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