No. Opening her dashboard does not notify her, and it does not leave a mark she can look up later. There is no "seen by" list, no last-viewed timestamp, and no weekly summary of who checked on whom.
You can look as often as you like, at three in the morning if that is when the worry arrives, and she will not know.
Why it works this way
Because the alternative is worse for both of you.
If she could see that you checked eleven times on Tuesday, she would feel watched, and you would start rationing your own reassurance to avoid looking anxious. Neither of those helps anyone. So the checking is quiet, and the deciding is hers.
What she does control
Not whether you look, but what is there when you do. She sets sharing category by category and person by person, in Who Can See What.
That means a sibling may see more or less than you do. If something matters, say it in the Circle rather than assuming the dashboard already told everyone.
She can change any of it at any time, and nobody is notified when she does. A switch that gets flipped off is not an accusation. It is just her preference on a Tuesday.
One thing that is not the same as watching
Engagement Awareness shows you patterns: when she last checked in, whether a streak broke or resumed. It is there so you know when a call would land well and when to leave her be.
It flows one way, toward you, and only with what she has shared. It is not a report on her, and there is no equivalent panel showing her a report on you.
The better move
If you find yourself checking often, that is usually worth a conversation rather than more checking. "I look at your page most mornings and it makes me feel better" is a kind thing to say out loud, and it beats her finding out some other way.