"dear Teyze

please accept my deepest condolence for the lose of your mother.

May ALLAH rest her in peace and in heaven.

best regards

yours

Hedef"

This is my way to pay respect to teyze on the lost of her mother.

If anyone have any other suggestions on special Turkish expressions in such occations please help

Çok çok teşekkür ederim

anyone .......

please ........

help in translation.

I cant translate yours but I have heard people here in turkey say

Başınız sağol olsun

others are,      Allah rahmet eylesin and  Allah gani gani rahmet eylesin

sağol deli

My attempt as learner. I know this is very important message, and unfortunately I´m not sure if I managed to translate it correctly, but I hope that if there are some mistakes here then someone will help.

I didn´t know how to translate "please accept my deepest condolence for the lose of your mother." directly into one sentence, so I changed your message. First two sentences (should) mean "I am very sorry to hear about your loss of your mother. Please accept my condolences".

Sevgilim Teyzem

Annenizini kaybettiğinizi duymak için çok üzgünüm. Başınız sağ olsun. Allah ona rahmet eylesin.

Saygılarımla

Hedef

Sevgili teyzeciğim (if she is your aunt you can use this suffix -ciğim, like aunty)

Annenin/annenizin (if you want to write it formal way you should use "annenizin" and "Sevgili NAME teyze")  vefatı dolayısıyla lütfen en derin taziyelerimi kabul edin/ediniz(formal).

Alllah rahmet eylesin ve mekanını cennet olsun.

Saygılarımla,

And I hope she rest in peace.

Take care