My, you certainly are the Young Mistress' beloved, Mistress.

Be-beloved...!

I'm sure that she is afraid that you will be taken away by Reimu, Mistress. "Taken" as in Remilia's feelings/love/attention will all go to Reimu and Flandre will be left alone/unloved/ignored

Please try to understand the Young Mistress' feelings...

...I do understand.

Flan's Room