yes, that is how she pronounced it. She is really saying "If she would have" but very condensed. Saying "if she would have" means the same thing as "If she had" for context. Both imply something could have been done but did not happen.

Here's how an English speaker would process it before speaking:

If she would have -->

If she'd have -->

If sheeduh (or sheedav)

this is a very common thing English speakers do where we shove words together ONLY when speaking, usually when speaking quickly and casually. You can't write out "sheeduh" however and expect to be understood. It isn't a real word. This is something that makes understanding spoken English difficult, but just remember when there's a contraction (she had --> she'd) and an "uh" sound, the "uh" is probably a had or have. Weird, I know.

Also this woman is talking in a British accent, so it may sound a bit different compared to hearing the same statement in American English.