Letting mom take 2 Month old over night

So my mom wants to take my son over night tomorrow so that my boyfriend and I can have a night to ourselves since things have been a little rough lately.

I know my mom would NEVER let anything happen to him and would be good with him. I trust her. It’s just idk I feel like a bad mom having him gone over night. This will be the first time he’s away from me over night. Does it make me a bad mom to let him stay over night at 2 months old. She said she won’t be offended if I don’t but I’m just so nervous and I don’t know why.