Immediate Help

this is serious but not to serious..I wear glasses. about a year ago I didn’t have my glasses due to them being broke and about late last month my mom finally got me a new pair of glasses and I loved those glasses I was so happy to get them..one day I went to my friends house, i got tired and I took a nap, before I took a nap i took my glasses off and layed them on her bed and went to sleep. I woke up and they disappeared, it hurt me so much I almost cried because I actually did love those glasses I got attached to them. I looked everywhere trust me, we searched her room and it’s nowhere to be seen at all. my mom, isn’t good with understanding me and she put me thru a lot of trauma on me to where i’m not comfortable with freely telling her that I sadly lost my glasses, she’s noticed but i keep making up excuses on what to say but i know it won’t last long..she’s going to eventually want to see them and I don’t know what to say or do. i just been hoping that my glasses could appear one day but there still no sign..the only plan I had was to wait until I get my own money and tell her about my glasses and give her the money myself. if I had those glasses trust me I would wear them everyday, they was brand new and i was so upset. I just don’t know what to do anymore, i’m supposed to get my state ID tomorrow and I know of course she’s going to once again ask about my glasses but i have no more excuses in me then she gets so angry and that just brings my trauma all the way back up so I have no idea what to do I need help. I’m young by the way