[Grammar] Antecedents Rules Question

[EmaNekaf]

I've been reading a lot about antecedents. Most of the articles I've read have done a good job of explaining how antecedents work in simple sentences, but it lead me to wonder if there are different rules in more complex situations. Take these sentences for example:

Ella rummaged through the bag until she found the mechanism. It took her a minute to remember Mara's instructions on how to use it, but when she did, she pressed the power button until it turned on.

Is it legal to leave it as "when she did" since Ella is still the subject of this sentence, or would I need to change it to "when Ella did" since Mara becomes the new antecedent and I need to specify that I am back to talking about Ella? I've run into situations like this all over the place, and I would love some clarification so I finally know what to do in cases like this. Thanks!

 

[PaulMatthews]

It’s clear that "she" is anaphoric to "Ella" since the "did" in "when she did" can only be interpreted as "remembered Maria’s instructions on how to use it".

So it is not possible for "Maria" to be the antecedent of "she".

 

[EmaNekaf]

It’s clear that "she" is anaphoric to "Ella" since the "did" in "when she did" can only be interpreted as "remembered Maria’s instructions on how to use it".

So it is not possible for "Maria" to be the antecedent of "she".

I've never been introduced to the idea of things being "anaphoric" before. Thank you for teaching me something new. That makes a lot more sense now.