Learn Turkish: Çıkarcı kadın ailesini temelli terk etmiş olmalı. - The selfish woman must have abandoned her family permanently.

You could rephrase the action as Terk etti o terk ediş (She left, and that was that / she never came back). The word temelli (permanently) achieves a very similar meaning in this sentence without using the idiomatic structure.

What is the difference between terk etmeli and terk etmiş olmalı?

Terk etmeli expresses an obligation: 'she must abandon.' To make a strong deduction about the past ('she must have abandoned'), Turkish pairs the past suffix -miş with olmalı (must be). So, terk etmiş olmalı translates to 'she must be in a state of having abandoned.'

How does the word çıkarcı (selfish) break down?

It stems from the noun çıkar, which means 'benefit,' 'advantage,' or 'self-interest.' The suffix -cı is added to describe a person characterized by that noun. Thus, a çıkarcı is someone who always seeks their own advantage, often translated as 'opportunist' or 'selfish.'

Why does ailesini have two suffixes at the end?

The first suffix is the third-person possessive -si, making it 'her family' (ailesi). Because 'her family' is the specific direct object being abandoned, it requires the accusative case marker. A buffer -n- is added between the vowels, followed by the accusative -i, resulting in ailesini.