Determining half vs full siblingship

[dianemarie58]

Thank you for supplying succinct and comprehensive responses which are easy to understand.

[dianemarie58]

Clarification

Do I order two kits?
Do The give you the option upon ordering to send one to yourself and another to a family member in another state?
How will they know to compare our DNA? Will the ordering of two separate kits allow a place to explain what information I...

[dianemarie58]

...

[dianemarie58]

My sister is not willing to b tested....

[dianemarie58]

Thank you for offering me such valuable and useful information.
I am now able to proceed.

[dianemarie58]

...

[dianemarie58]

My niece (daughter of my older sister) and I wish to test to determine if her mother and I share the same mother or have different mothers. No other family member is available for this testing.
Three basic questions:
1. Which test kits do I order for us?
2. What information will...