so that we can give you a correct corresponding answer
can you tell us:
1) Are you an LDS member?
2) is the person you want to help you an LDS member
3) what are you trying to accomplish though the helper option?
for living person you cannot merge between two accounts.
this is for privacy reasons.
for deceased person - you both should be able to see them without really doing anything
but the living portion of your family tree - cannot be shared between two different accounts.
As 'Dennis' has already proffered ...
And, to further support 'Dennis's' response ...
YOU can ONLY see "Deceased" individuals/persons in "Family Tree" of "FamilySearch"; except, with this 'rider', that you can ALSO only see "Living" individual/person in "Family Tree" of "FamilySearch" that YOU created; as, they reside in your "Private Spaces".
No other User/Patron (and, this includes IMMEDIATE family members) can see ANY "Living" individuals/persons that were created by another User/Patron; as, they ONLY reside in the "Private Spaces" of the User/Patron who created them.
We CANNOT even see the ACTUAL Record in "Family Tree" of "FamilySearch" of our IMMEDIATE Family (eg. Spouse; Children; Parents; Siblings; ETC; Etc; etc) if they are "Living"; and, they have their own "FamilySearch" Account.
Of course, you can create your "Living" Family members; and, record them in "Family Tree" of "FamilySearch"; but, they will ONLY be seen by you:
- You cannot "Share" them with any other User/Patron.
- You cannot "Merge"/'Combine" them with any other "Living" individual/person residing in the "Private Spaces" of another User/Patron.
There is CURRENTLY no mechanism in "Family Tree" of "FamilySearch" for Users/Patrons, to "Share"; or, "give permission" to "Share", the "Living" individuals/persons in their own "Private Spaces" with/between other/another User/Patron.
There are a myriad of "Privacy" Laws within the many various Countries and Unions throughout the World - it is a nightmare to negotiate.
"Family Tree" of "FamilySearch" is used in many Countries and Unions throughout the World; and, as such, must adhere to the myriad of "Privacy" Laws throughout the World.
Hence, "Privacy" is one of the reasons that we cannot "Share" the "Living" individuals/persons in our own "Private Spaces" - it is NOT the ONLY reason; but, certainly has a bearing on the matter.
Another factor is that such would have to be 'Coded'/'Programmed' into the Programme that is "Family Tree" of "FamilySearch".
'Yes', these "Living" individuals/person in "Family Tree" of "FamilySearch" WILL, in fact, in many (most) cases will be "Duplicated" - unfortunately a necessary situation that currently cannot be avoided.
I know that there are "Duplicates" of the "Living" ME - at least, one for my Wife and each of our Children, not to mention my other ("Living") extended Family members.
Here are some "Knowledge Articles" in "FamilySearch" in regard to "Private Spaces" and "Living" individuals/persons:
What is a private space in Family Tree?
Who can see my living relatives in Family Tree?
I hope this helps.
ps: In relation you your original 'Question'; IF, you are a Member of the Church, you CAN add your "Daughter", in fact, any family member; or, for that matter, ANY User/Patron, to your (Old term: 'Consultant' ...) 'Planner'.
Let me rephrase the question... How do I merge my family tree and my daughters into one. so she can work on our tree together
here is a link that talks about sharing your family tree
but as stated - this is only for deceased persons.