Girlfriend is angry because I bought my best friend a more expensive gift than hers?

Anonymous
OK so last week was my best friend's birthday and I thought of expressing my gratitude for all she has done for me. so I bought her a stuffed panda bear and on its chest its encrusted with a picture I drew of me and her and all my other buddies. so to get the drawing framed and encrusted it cost a lot. around £90 and the actual bear cost about £50. now on Valentine's day I took my girlfriend to the London eye and then I took her to an Italian restaurant and when we got home she opened the door to a big teddy bear I bought her which had an encrusted red transparent heart and inside it had a photo of us which she really loved. and the teddy cost £50. now when she saw what I had bought my bff she got jealous and she went ballistic on me she was like is your best worth more to you than me and she calling me a jerk etc. so to calm her down I just said " to be fair she has been with me through a lot more and when the chips were low she never bailed out " now she isn't replying my texts nor is she answering my calls. so my question is did I do anything wrong here ?
Girlfriend is angry because I bought my best friend a more expensive gift than hers?
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