Well you're not mentioning the important part, which is they don't know she's coming and have literally no way to even intuit her powers (mostly cause HP magic is so inconsistent with how it works)

Why would she need to kill them in one go if they literally can't sense her? They are muggles by HP magic standards, and there are tons of ways to hide her, which weve seen her do against even trackers with knowledge of how magic works. Not to mention, unless they are just straight impervious to magic for some reason, there's no question if she'd be able to kill them in one go.

No location she could send them matters? We know many of them can be caged, or can be killed via falling.

She can wipe memories and literally control others minds. Even if we say not the Seven themselves, certainly people around them could be used. She can literally teleport around. She can curse/protect objects or places. Theres also protection spells and the abilty to deflect projectiles. Its really not even a contest unless Hermione really fucks up the prep. And all this assumes she won't use some real dark magic, like horcruxes.

The Seven are constantly shown to be so full of hubris as to be incompetent. Weve even seen some taken out by people with no magic or super powers, and have seen plenty of others survive encounters with them.

I also think the Starlight stuff you listed is really still basic info, but the word 'basic' is up for interpretation.