Hello, i am new to here. I have been with my partner for 14 years. My daughter is nearly 16. Since she has got older all they do is argue. 
We have had a troublesome past, as my partner used to come and go.
The arguing is terrible, im in the middle as she talks to him like crap and has no respect and he just explodes!
Hi, I understand that this is a difficult situation. Have you asked her why she behaves like this, why she seems to have a problem with him, try to be understanding and think of where she's coming from. And as for your partner, it may do to remind him that he was a teenager once and they usually try to rebel at one point or another. Of course it's difficult to take this sort of behaviour continually, however she is a kid still and he is an adult. I understand that this has put you in a very precarious and thankless situation. You may find it helpful to read our articles on teenage behaviour. If you feel you need further support please e-mail us at askus@familylives.org.uk or call our freephone helpline on 0808 800 2222.