I think I’m being scammed. Can I still cash the check?

A lady emailed me about the purse that I have been trying to sell. She told me she would send me a check and then I would send her the purse after I get the check. So I got the check today, and she emailed me and said her husband “accidentally” put more money on it because some of it was supposed to be sent to her... show more A lady emailed me about the purse that I have been trying to sell. She told me she would send me a check and then I would send her the purse after I get the check. So I got the check today, and she emailed me and said her husband “accidentally” put more money on it because some of it was supposed to be sent to her daughter. Now I have a check for $4,000 and I was only supposed to get $900. I told her I would cancel the check and she could just send me a new check, but things are getting weird now and all she’s telling me to do is “deposit the check”. So can I just deposit the check and keep all of the money and not get in trouble for it since the check is in my name?
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