You want to know if you're skilled enough to keep something from Lady Lestrange?

I can see that you practising has made a difference, but she's a much stronger legilimens than I. I don't know what she'd see.

But with the way her behaviour and temperament have been of late, it might be better to tell her, magnanimous as she's been. Especially as it would be in keeping with the helpful nature you've already established.

I could tell her for you, too.