I have 14 year old, non diabetic and I feel quiet frustrated and want to
sometime. Now you have two children with diabetes, whoa I do feel so much for you and your children, it isn't easy.
It's love isn't it, it's not a case of not trusting them( but we do have those niggling moments) As a parent we love them no matter what. She's 19, she is an adult and she is living her life.............. I hope she will see ( a light bulb moment) what potential harm she could be doing to herself.
Tell them both that you will always love them and be there for them, through the good, the bad and the ugly.
Be calm and carry on being the loving, caring parent that you are. Take care.
Good luck and all the best RRB