around here where I live and work yes for some mothers and daughter they do have this close bonding.. example a woman down the street has this kind of mother daughter relationship for them their closeness comes from the fact that the mother had a hard time conceiving, it was a miracle to say the least that this daughter was born, full term and with no complications despite the mother having cancer and put off treatment until the child was born. both mother and daughter know it is truly something special that they still have each other. they show each other their love for each other in the same ways in which you posted and more.. a day doesn't go by without seeing the UPS truck bringing flowers and other gifts to the mother, or picking up an order to which the destination is the daughter. they prominently display their pictures together and are constantly making time to have new portraits separately and together..

I know of other mother daughter relationships that are like what you posted and they are completely normal. I also know of father- daughter, father-son, and mother-son, step parent-step child relationships where parent and child have forged this fantastic, close parent child bonds.

we have parents- child groups here that actually teach parents and children to do the kinds of things you have posted - leave pictures for each other, spend time together ...forge closer parent child bonds then they already have... many people have the kind of parent child relationships where they dont get along, hate each other, fight, dont speak and work done have any parent child relationships at all. our parent/child groups do things like go to sears/ macys/....for family and individual portraits to give each other, parent child dinners and other family oriented activities to promote close family relationships.... we even have foster programs big brother big sister programs, grandparents day dinners.... here where I live and work we are family oriented and promote family member having close non abusive relationships...

my suggestion - and Im going to be blunt here - you have a choice -

you can accept the fact that this mother and this daughter are a part of each others lives and are going to continue to show their love for each other in what ever ways they can even if its to post a picture of their self where the other will see them during times when they cant be together, do things together.

or you dont accept it and dont be a part of their lives any more.

no one is forcing you to take part in their relationship or any relationship with either of them, you did say you are separated, the daughter is an adult capable of making her own decisions, the mother is an adult capable of making her own decisions neither mother nor daughter feel their relationship is not normal, so frankly this issue is between the mother and daughter, not you. you cant control others but you can control you.. if you dont like their relationship then dont be a part of their life.