Safe at Heathrow send £4000 scam alert

Just got off the phone with my mom who’s stated her marriage is coming to end , she has been speaking to an orthopaedic surgeon from Jordon who has sent $4.5 million dollars in a safe which is at Heathrow and is asking her to pay £4k for it be released from customs. I can’t get her to see the light that this a scam , I’ve asked her to go to citizens advice , police , lawyer. I’ve asked her to send me the documents so I can research but she’s hell bent that this is real and that as soon as she sends the money she will have access to this safe that she has the passcode to. Please can any one help or advice. England resident

Edit - thank you for all the replies I have rang her bank and they couldn’t do nothing as I am not with her but have advised if go into a bank with her they will play her a video and talk her through it I have also sent her the link to this video on Facebook. She has sent me a photo of the man , learnt how to google image search and it’s a Dr Garth Davis scam I have sent her all this information and hopefully it’s starting to sink in. Due the distance I am unable to get to her until Saturday but hopefully this is enough for her to start seeing the light.