That it's even possible is a dangerous assumption, and should not be a predicting factor in the decision, more so since it justifies putting it off longer and longer.
It being possible is not an assumption, there are at least three cases of it in canon, Isabeau and Lapin in tart, as well as the third member of the magus wings in the gatcha game from what I gathered.*
*edit: actually, we also have the case of Kazumi magica, with the pleiades actually being successful on dewitching, they did it severally times, the only problem they had was making it stick, and we have exactly the solution for that part since is was a mental problem.
Yes, because things are going to get worse. There's going to be more Witches, more Abnormalities, and more Distortion type things. Time isn't going to make this better, time is an enemy. Telling her now is as good as its going to get.
We have no proof that this is the case, the chapter may be named the calm before, but the storm it implies can very well be our planned reunion, who promise to get at least a little chaotic due to all the participants.
It's been only 1 WEEK! GODDAMN IT! 1 WEEKKKKK!!! We need to prepare MORE!
On the contrary, it's barely been one week, this is not a long time and we are already progressing fast.
We are on our way to resolve some of Homura's recurring problems about Mami and Kyouko, have worked on Sayaka social and making her accept Homura, the coming reunion will allows us to begin working on bringing the parents in as a support network for the girls, we have considerably buoyed Mami's self confidence by adopting her.
Do not think that working on our combat ability is the most important thing, is is secondary, at best, what we need is social, not more guns.
Big bird is both the tankiest Waw and one of the hardest hitting, he is a very bad benchmark, also, the hostages are the main reason we had problems, we were constantly distracted by the fact we had to keep them alive, a one on one fight would probably have gone differently.
We are utterly absolutely powerless if an opponent like Queen Bee, Parasite Tree, Little Prince or any other infection type abnormality starts to get their ball rolling. We might even lose to some of the stronger WAW abnos too, Queen of Hatred, Black Swan, Dreaming Current, we can't assume that they will all be benign and help us.
This is false, actually, it is beginning to feel as if you are fearmongering right now, we already are quite strong, bigger guns are not something that is so pressing we should stop working on the far more important part that is social.
Do remember that the quest was intended to be winnable with us having chosen to be Carmen, so not that good at fighting.
Also, this is a narrative quest, if Lepi wants us to struggle, then it doesn't matter what we did, we will struggle, if lepi wants us to win via the power of friendship, then no amount of solo training will ever help us. The thing I want out of our science session is more knowledge, the fact it can makes us slightly more powerful is just a slight bonus, it is about knowing ourself for me, and I don't want all of them to be made unfun by powergaming nonsense.