Had to leave museum because of a doll

First time ng anak kong 3yo pumunta ng National Museum. I decided to take her there because she's recently been drawing a lot and looking at paintings and decorations wherever we go, be it a hotel, restaurant, or random bahay. However, she's very shy, and I wasn't sure if she'd be okay sa crowd or even going around sa museum for a long period of time. So dinala namin si Molly, yung favorite doll nya which she usually pretends is her daughter. Molly also gives her comfort especially when she's feeling extra shy.

So hayun, when we arrived, we deposited our bags and umbrella, since bawal dalhin sa loob. We only brought our phones and of course, Molly. Sobrang natuwa anak ko sa exhibits, she would ask me about certain pieces, and I'd explain them to her. In turn, she would also explain them to Molly in her best "Mommy" voice. It was so cute to watch, and I just loved that she was genuinely enjoying herself.

But then, a lady guard came up to us and wanted to confiscate Molly. She said dolls are not allowed in the museum as a 'respect to the exhibit.' Sabi ko kay Ate Guard na wala naman sa list of prohibited items. Pero she kept on insisting bawal. Not only that, she ordered me to delete all the pictures na kasama yung doll. Sabi ko lahat ng pictures ng anak ko, hawak hawak nya yung doll (so I'd basically be deleting most of my daughter's pictures). 

I asked to speak to a manager, and after a while a male security guard approached us. Even he couldn't explain to me why we needed to give up the doll (esp since it wasn't in the list of prohibited items sa may entrance). Then as if they just gave up trying to explain, they offered a compromise. We could keep the pictures and continue going around the museum as long as we deposit the doll. My daughter was reluctant to let go of her doll and kept saying "Molly wants to go around the museum." So, ang ending, we were escorted out of the museum like criminals (okay fine that's an exaggeration pero that's kinda how it felt!). My daughter looked so confused and scared while walking towards the exit and when we were already in the car, she flat out said na ayaw nya sa museums kasi mean daw mga tao dun.

I can't believe what started out as a good idea (bringing the doll) ended up being the reason the whole trip got ruined.

EDIT: For those asking, other guards including the one at the entrance who checked our belongings saw my daughter's doll and didn't mention anything about depositing it. They just mentioned the bags and umbrella.

EDIT 2: The list at the entrance did not have toys on it, but I did look up the prohibited items online when the guard approached us and the list I found did not mention toys. I realize now that it was probably an outdated list. That was completely my fault.

THANK YOU all for educating me, and for all your input. I will still attempt to take my daughter to the museum again and hopefully she'll have a better experience next time. :)