{{Hello ^^ and i would like to ask,what would Lupin do if he had a daughter and he saw Sholmes and her together?}}
Lupin would be confident that his daughter would never stray near that DISGUSTING detective, but if the case arises he’d of course be childishly distraught because this is SHOLMES we’re talking about here — Lupin acts like a complete child 75% of the time Sholmes is involved — but deep down, he wouldn’t do anything necessarily drastic.
While Lupin despises Sholmes with every fiber of his being, Lupin knows that Sholmes is (sometimes) a good person. He trusts Sholmes wouldn’t do anything that’d truly concern Lupin (and if Sholmes said something about Lupin that he wouldn’t like directly to his daughter, Lupin would naturally tell his daughter that Sholmes isn’t worth believing whatsoever). It’s not like Sholmes isn’t aware of Lupin’s occupation, after all. There isn’t a point of secrecy. That, and he’s quite certain Sholmes would prefer bothering Lupin through more direct means than abusing his *trust* ((lupin voice) ew dun tell sholmes) in him involving his daughter, of all things.
Also, Lupin would trust his daughter’s judgement. He helped teach her everything she’ll need to know, after all. If his daughter enjoys spending time with Sholmes (he’s not jealous, what are you talking about), he’d still respect her wishes. He’s not a dictator. If you catch him sulking, don’t tell Sholmes. Lord knows that guy has enough material to embarrass Lupin with.