。
Her fetish is bondage and domination, apparently.
Literal
Her fetish [subject-が] bondage [and-と] domination [copula-でしょう].
フェチ is the Japanese abbreviation of フェティシズム ('fetishism'). 緊縛 (きんばく, 'tight binding, bondage') is the Japanese bondage term. 支配 (しはい, 'control, domination'). でしょう adds uncertainty/inference — the speaker is guessing or reporting secondhand. The sentence is matter-of-fact about intimate topics, characteristic of the frank tone in certain Japanese media.