Sorry to hear that things did not work out for you.
I know a few of you are not going to agree ( maybe a lot of you) but the collar belongs to the Master.
It is not the girls.The collar was placed around the girls neck as a sign of ownership. He allowed her to wear it. he did not give her it.
if it was hers then she would be collared to her self..
it was not an engagement ring . That by the way only means a promise to marry. its not a ownership ring.The collar belongs to the Master he may put it on another girl if he so wishes to. it is a sign that HE owns her. she is his property. The COLLAR IS NOT A GIFT