Linda,
It is possible that the other profile manager has not responded to the request. Have you contacted him/her privately, left a message on the bulleton board for him to see or leave a message after confirming the merge on your side?
If having done on these things, on the profile page of the other side that is to be merged, go to the bottom of the page and you will see a link for "unresponsive profile manager"
Click this link, fill out the form and submit your information and you will receive notification in you email of what to do next.
M.