Ahh, I feel you. I guess the situation is similar in every slavic country, Yana.
Here they're of course bashing Halloween for being a "western satanic pagan holiday". And you know what they came up with? I laughed my ass off when I found out, seriously. They're organizing "Holy Wins" instead of "Halloween" in schools. Children are going to dress up as
saints and have their christian whatever during that day. Just... what the hell
I'm glad in a way though because our old pagan tradition in Poland is "Dziady" ("Grandfathers") and I think more people are celebrating it than Halloween and the catholic "tradition". Here it's a tradition to celebrate Dziady with respect, honouring our ancestors and lighting candles for them in our homes and on their tombstones, visiting family members and spending some time together. It's a time of reverie and meditation. Not too much crazy partying involved but I love that. And what I love the most is that the christian tradition here is so similar to our pagan tradition, at least when it comes to this particular holiday, that noone can really tell if you're celebrating it the "regular christian way" or if you're doing it the "pagan, satanic way"
When it comes to people brainwashed by catholic church - well, we can't help it. A huge part of my family is extremely christian but me and my closest family just keep away from them as much as possible and we're simply not giving a shit about what they're preaching. It's their problem. So just ignore your friends and don't let them judge you - they can preach whatever they want in their households, not in yours
I hope you're going to have an amazing Halloween party with your daughter and don't let the ignorant people make you feel bad! You are the one who decides how you're going to honor your ancestors, not some christian haters!
P.S.: Someone made a pretty accurate picture showing how the children celebrating "Holy Wins" should be dressed up. Most of the saints died in terrible ways after all, hahah